Господин Экзамен

Другие калькуляторы

sin(10*a)*sin(8*a)+sin(8*a)*sin(6*a) если a=1

Выражение, которое надо упростить:

Решение

Вы ввели [src]
sin(10*a)*sin(8*a) + sin(8*a)*sin(6*a)
$$\sin{\left(6 a \right)} \sin{\left(8 a \right)} + \sin{\left(8 a \right)} \sin{\left(10 a \right)}$$
sin(10*a)*sin(8*a) + sin(8*a)*sin(6*a)
Общее упрощение [src]
(sin(6*a) + sin(10*a))*sin(8*a)
$$\left(\sin{\left(6 a \right)} + \sin{\left(10 a \right)}\right) \sin{\left(8 a \right)}$$
(sin(6*a) + sin(10*a))*sin(8*a)
Подстановка условия [src]
sin(10*a)*sin(8*a) + sin(8*a)*sin(6*a) при a = 1
подставляем
sin(10*a)*sin(8*a) + sin(8*a)*sin(6*a)
$$\sin{\left(6 a \right)} \sin{\left(8 a \right)} + \sin{\left(8 a \right)} \sin{\left(10 a \right)}$$
(sin(6*a) + sin(10*a))*sin(8*a)
$$\left(\sin{\left(6 a \right)} + \sin{\left(10 a \right)}\right) \sin{\left(8 a \right)}$$
переменные
a = 1
$$a = 1$$
(sin(6*(1)) + sin(10*(1)))*sin(8*(1))
$$\left(\sin{\left(6 (1) \right)} + \sin{\left(10 (1) \right)}\right) \sin{\left(8 (1) \right)}$$
(sin(6*1) + sin(10*1))*sin(8*1)
$$\left(\sin{\left(10 \cdot 1 \right)} + \sin{\left(6 \cdot 1 \right)}\right) \sin{\left(8 \cdot 1 \right)}$$
(sin(6) + sin(10))*sin(8)
$$\left(\sin{\left(10 \right)} + \sin{\left(6 \right)}\right) \sin{\left(8 \right)}$$
(sin(6) + sin(10))*sin(8)
Собрать выражение [src]
  cos(14*a)   cos(18*a)           
- --------- - --------- + cos(2*a)
      2           2               
$$\cos{\left(2 a \right)} - \frac{\cos{\left(14 a \right)}}{2} - \frac{\cos{\left(18 a \right)}}{2}$$
-cos(14*a)/2 - cos(18*a)/2 + cos(2*a)
Раскрыть выражение [src]
            2       12                2       8               2       16              2       4             2       2               2       6                2       14                2       10   
- 327680*cos (a)*sin  (a) - 103424*cos (a)*sin (a) - 65536*cos (a)*sin  (a) - 2816*cos (a)*sin (a) + 128*cos (a)*sin (a) + 24064*cos (a)*sin (a) + 229376*cos (a)*sin  (a) + 245760*cos (a)*sin  (a)
$$- 65536 \sin^{16}{\left(a \right)} \cos^{2}{\left(a \right)} + 229376 \sin^{14}{\left(a \right)} \cos^{2}{\left(a \right)} - 327680 \sin^{12}{\left(a \right)} \cos^{2}{\left(a \right)} + 245760 \sin^{10}{\left(a \right)} \cos^{2}{\left(a \right)} - 103424 \sin^{8}{\left(a \right)} \cos^{2}{\left(a \right)} + 24064 \sin^{6}{\left(a \right)} \cos^{2}{\left(a \right)} - 2816 \sin^{4}{\left(a \right)} \cos^{2}{\left(a \right)} + 128 \sin^{2}{\left(a \right)} \cos^{2}{\left(a \right)}$$
/        3       3           5                  5          \ /        5       3           7                  7                   3       5   \   /        5       3           7                  7                   3       5   \ /         3       7             7       3            9                   9                    5       5   \
\- 20*cos (a)*sin (a) + 6*cos (a)*sin(a) + 6*sin (a)*cos(a)/*\- 56*cos (a)*sin (a) - 8*sin (a)*cos(a) + 8*cos (a)*sin(a) + 56*cos (a)*sin (a)/ + \- 56*cos (a)*sin (a) - 8*sin (a)*cos(a) + 8*cos (a)*sin(a) + 56*cos (a)*sin (a)/*\- 120*cos (a)*sin (a) - 120*cos (a)*sin (a) + 10*cos (a)*sin(a) + 10*sin (a)*cos(a) + 252*cos (a)*sin (a)/
$$\left(6 \sin^{5}{\left(a \right)} \cos{\left(a \right)} - 20 \sin^{3}{\left(a \right)} \cos^{3}{\left(a \right)} + 6 \sin{\left(a \right)} \cos^{5}{\left(a \right)}\right) \left(- 8 \sin^{7}{\left(a \right)} \cos{\left(a \right)} + 56 \sin^{5}{\left(a \right)} \cos^{3}{\left(a \right)} - 56 \sin^{3}{\left(a \right)} \cos^{5}{\left(a \right)} + 8 \sin{\left(a \right)} \cos^{7}{\left(a \right)}\right) + \left(- 8 \sin^{7}{\left(a \right)} \cos{\left(a \right)} + 56 \sin^{5}{\left(a \right)} \cos^{3}{\left(a \right)} - 56 \sin^{3}{\left(a \right)} \cos^{5}{\left(a \right)} + 8 \sin{\left(a \right)} \cos^{7}{\left(a \right)}\right) \left(10 \sin^{9}{\left(a \right)} \cos{\left(a \right)} - 120 \sin^{7}{\left(a \right)} \cos^{3}{\left(a \right)} + 252 \sin^{5}{\left(a \right)} \cos^{5}{\left(a \right)} - 120 \sin^{3}{\left(a \right)} \cos^{7}{\left(a \right)} + 10 \sin{\left(a \right)} \cos^{9}{\left(a \right)}\right)$$
(-20*cos(a)^3*sin(a)^3 + 6*cos(a)^5*sin(a) + 6*sin(a)^5*cos(a))*(-56*cos(a)^5*sin(a)^3 - 8*sin(a)^7*cos(a) + 8*cos(a)^7*sin(a) + 56*cos(a)^3*sin(a)^5) + (-56*cos(a)^5*sin(a)^3 - 8*sin(a)^7*cos(a) + 8*cos(a)^7*sin(a) + 56*cos(a)^3*sin(a)^5)*(-120*cos(a)^3*sin(a)^7 - 120*cos(a)^7*sin(a)^3 + 10*cos(a)^9*sin(a) + 10*sin(a)^9*cos(a) + 252*cos(a)^5*sin(a)^5)
Объединение рациональных выражений [src]
(sin(6*a) + sin(10*a))*sin(8*a)
$$\left(\sin{\left(6 a \right)} + \sin{\left(10 a \right)}\right) \sin{\left(8 a \right)}$$
(sin(6*a) + sin(10*a))*sin(8*a)
Комбинаторика [src]
(sin(6*a) + sin(10*a))*sin(8*a)
$$\left(\sin{\left(6 a \right)} + \sin{\left(10 a \right)}\right) \sin{\left(8 a \right)}$$
(sin(6*a) + sin(10*a))*sin(8*a)
Степени [src]
  /   -10*I*a    10*I*a\ /   -8*I*a    8*I*a\   /   -8*I*a    8*I*a\ /   -6*I*a    6*I*a\
  \- e        + e      /*\- e       + e     /   \- e       + e     /*\- e       + e     /
- ------------------------------------------- - -----------------------------------------
                       4                                            4                    
$$- \frac{\left(e^{6 i a} - e^{- 6 i a}\right) \left(e^{8 i a} - e^{- 8 i a}\right)}{4} - \frac{\left(e^{8 i a} - e^{- 8 i a}\right) \left(e^{10 i a} - e^{- 10 i a}\right)}{4}$$
-(-exp(-10*i*a) + exp(10*i*a))*(-exp(-8*i*a) + exp(8*i*a))/4 - (-exp(-8*i*a) + exp(8*i*a))*(-exp(-6*i*a) + exp(6*i*a))/4
Тригонометрическая часть [src]
     2              
2*sin (8*a)*cos(2*a)
$$2 \sin^{2}{\left(8 a \right)} \cos{\left(2 a \right)}$$
sin(6*a)   sin(10*a)
-------- + ---------
csc(8*a)    csc(8*a)
$$\frac{\sin{\left(6 a \right)}}{\csc{\left(8 a \right)}} + \frac{\sin{\left(10 a \right)}}{\csc{\left(8 a \right)}}$$
        1                   1         
----------------- + ------------------
csc(6*a)*csc(8*a)   csc(8*a)*csc(10*a)
$$\frac{1}{\csc{\left(8 a \right)} \csc{\left(10 a \right)}} + \frac{1}{\csc{\left(6 a \right)} \csc{\left(8 a \right)}}$$
   /      pi\               /      pi\          
cos|8*a - --|*sin(6*a) + cos|8*a - --|*sin(10*a)
   \      2 /               \      2 /          
$$\sin{\left(6 a \right)} \cos{\left(8 a - \frac{\pi}{2} \right)} + \sin{\left(10 a \right)} \cos{\left(8 a - \frac{\pi}{2} \right)}$$
   sin(6*a)       sin(10*a)  
------------- + -------------
csc(pi - 8*a)   csc(pi - 8*a)
$$\frac{\sin{\left(6 a \right)}}{\csc{\left(- 8 a + \pi \right)}} + \frac{\sin{\left(10 a \right)}}{\csc{\left(- 8 a + \pi \right)}}$$
   /      pi\               /       pi\         
cos|6*a - --|*sin(8*a) + cos|10*a - --|*sin(8*a)
   \      2 /               \       2 /         
$$\sin{\left(8 a \right)} \cos{\left(6 a - \frac{\pi}{2} \right)} + \sin{\left(8 a \right)} \cos{\left(10 a - \frac{\pi}{2} \right)}$$
          1                         1           
---------------------- + -----------------------
csc(6*a)*csc(pi - 8*a)   csc(10*a)*csc(pi - 8*a)
$$\frac{1}{\csc{\left(10 a \right)} \csc{\left(- 8 a + \pi \right)}} + \frac{1}{\csc{\left(6 a \right)} \csc{\left(- 8 a + \pi \right)}}$$
   sin(6*a)       sin(10*a)  
------------- + -------------
   /      pi\      /      pi\
sec|8*a - --|   sec|8*a - --|
   \      2 /      \      2 /
$$\frac{\sin{\left(6 a \right)}}{\sec{\left(8 a - \frac{\pi}{2} \right)}} + \frac{\sin{\left(10 a \right)}}{\sec{\left(8 a - \frac{\pi}{2} \right)}}$$
             1                              1             
---------------------------- + ---------------------------
csc(pi - 10*a)*csc(pi - 8*a)   csc(pi - 8*a)*csc(pi - 6*a)
$$\frac{1}{\csc{\left(- 8 a + \pi \right)} \csc{\left(- 6 a + \pi \right)}} + \frac{1}{\csc{\left(- 10 a + \pi \right)} \csc{\left(- 8 a + \pi \right)}}$$
   sin(6*a)       sin(10*a)  
------------- + -------------
   /pi      \      /pi      \
sec|-- - 8*a|   sec|-- - 8*a|
   \2       /      \2       /
$$\frac{\sin{\left(6 a \right)}}{\sec{\left(- 8 a + \frac{\pi}{2} \right)}} + \frac{\sin{\left(10 a \right)}}{\sec{\left(- 8 a + \frac{\pi}{2} \right)}}$$
          1                         1           
---------------------- + -----------------------
            /      pi\               /       pi\
csc(8*a)*sec|6*a - --|   csc(8*a)*sec|10*a - --|
            \      2 /               \       2 /
$$\frac{1}{\csc{\left(8 a \right)} \sec{\left(10 a - \frac{\pi}{2} \right)}} + \frac{1}{\csc{\left(8 a \right)} \sec{\left(6 a - \frac{\pi}{2} \right)}}$$
   /      pi\    /      pi\      /      pi\    /       pi\
cos|6*a - --|*cos|8*a - --| + cos|8*a - --|*cos|10*a - --|
   \      2 /    \      2 /      \      2 /    \       2 /
$$\cos{\left(6 a - \frac{\pi}{2} \right)} \cos{\left(8 a - \frac{\pi}{2} \right)} + \cos{\left(8 a - \frac{\pi}{2} \right)} \cos{\left(10 a - \frac{\pi}{2} \right)}$$
             1                             1              
--------------------------- + ----------------------------
   /      pi\    /      pi\      /      pi\    /       pi\
sec|6*a - --|*sec|8*a - --|   sec|8*a - --|*sec|10*a - --|
   \      2 /    \      2 /      \      2 /    \       2 /
$$\frac{1}{\sec{\left(8 a - \frac{\pi}{2} \right)} \sec{\left(10 a - \frac{\pi}{2} \right)}} + \frac{1}{\sec{\left(6 a - \frac{\pi}{2} \right)} \sec{\left(8 a - \frac{\pi}{2} \right)}}$$
             1                             1              
--------------------------- + ----------------------------
   /pi      \    /      pi\      /pi      \    /       pi\
sec|-- - 8*a|*sec|6*a - --|   sec|-- - 8*a|*sec|10*a - --|
   \2       /    \      2 /      \2       /    \       2 /
$$\frac{1}{\sec{\left(- 8 a + \frac{\pi}{2} \right)} \sec{\left(10 a - \frac{\pi}{2} \right)}} + \frac{1}{\sec{\left(- 8 a + \frac{\pi}{2} \right)} \sec{\left(6 a - \frac{\pi}{2} \right)}}$$
             1                              1             
---------------------------- + ---------------------------
   /pi       \    /pi      \      /pi      \    /pi      \
sec|-- - 10*a|*sec|-- - 8*a|   sec|-- - 8*a|*sec|-- - 6*a|
   \2        /    \2       /      \2       /    \2       /
$$\frac{1}{\sec{\left(- 8 a + \frac{\pi}{2} \right)} \sec{\left(- 6 a + \frac{\pi}{2} \right)}} + \frac{1}{\sec{\left(- 10 a + \frac{\pi}{2} \right)} \sec{\left(- 8 a + \frac{\pi}{2} \right)}}$$
4*cos(3*a)*cos(4*a)*sin(3*a)*sin(4*a) + 4*cos(4*a)*cos(5*a)*sin(4*a)*sin(5*a)
$$4 \sin{\left(3 a \right)} \sin{\left(4 a \right)} \cos{\left(3 a \right)} \cos{\left(4 a \right)} + 4 \sin{\left(4 a \right)} \sin{\left(5 a \right)} \cos{\left(4 a \right)} \cos{\left(5 a \right)}$$
4*cos(3*a)*sin(3*a)*sin(4*a)   4*cos(5*a)*sin(4*a)*sin(5*a)
---------------------------- + ----------------------------
          sec(4*a)                       sec(4*a)          
$$\frac{4 \sin{\left(3 a \right)} \sin{\left(4 a \right)} \cos{\left(3 a \right)}}{\sec{\left(4 a \right)}} + \frac{4 \sin{\left(4 a \right)} \sin{\left(5 a \right)} \cos{\left(5 a \right)}}{\sec{\left(4 a \right)}}$$
     2         2                               2         2                       
4*cos (3*a)*cos (4*a)*tan(3*a)*tan(4*a) + 4*cos (4*a)*cos (5*a)*tan(4*a)*tan(5*a)
$$4 \cos^{2}{\left(3 a \right)} \cos^{2}{\left(4 a \right)} \tan{\left(3 a \right)} \tan{\left(4 a \right)} + 4 \cos^{2}{\left(4 a \right)} \cos^{2}{\left(5 a \right)} \tan{\left(4 a \right)} \tan{\left(5 a \right)}$$
     2         2                               2         2                       
4*sin (3*a)*sin (4*a)*cot(3*a)*cot(4*a) + 4*sin (4*a)*sin (5*a)*cot(4*a)*cot(5*a)
$$4 \sin^{2}{\left(3 a \right)} \sin^{2}{\left(4 a \right)} \cot{\left(3 a \right)} \cot{\left(4 a \right)} + 4 \sin^{2}{\left(4 a \right)} \sin^{2}{\left(5 a \right)} \cot{\left(4 a \right)} \cot{\left(5 a \right)}$$
4*cos(3*a)*sin(3*a)*sin(4*a)   4*cos(5*a)*sin(4*a)*sin(5*a)
---------------------------- + ----------------------------
          /pi      \                     /pi      \        
       csc|-- - 4*a|                  csc|-- - 4*a|        
          \2       /                     \2       /        
$$\frac{4 \sin{\left(3 a \right)} \sin{\left(4 a \right)} \cos{\left(3 a \right)}}{\csc{\left(- 4 a + \frac{\pi}{2} \right)}} + \frac{4 \sin{\left(4 a \right)} \sin{\left(5 a \right)} \cos{\left(5 a \right)}}{\csc{\left(- 4 a + \frac{\pi}{2} \right)}}$$
                       /      pi\    /      pi\                          /      pi\    /      pi\
4*cos(3*a)*cos(4*a)*cos|3*a - --|*cos|4*a - --| + 4*cos(4*a)*cos(5*a)*cos|4*a - --|*cos|5*a - --|
                       \      2 /    \      2 /                          \      2 /    \      2 /
$$4 \cos{\left(3 a \right)} \cos{\left(4 a \right)} \cos{\left(3 a - \frac{\pi}{2} \right)} \cos{\left(4 a - \frac{\pi}{2} \right)} + 4 \cos{\left(4 a \right)} \cos{\left(5 a \right)} \cos{\left(4 a - \frac{\pi}{2} \right)} \cos{\left(5 a - \frac{\pi}{2} \right)}$$
                      4                                               4                      
--------------------------------------------- + ---------------------------------------------
                     /      pi\    /      pi\                        /      pi\    /      pi\
sec(3*a)*sec(4*a)*sec|3*a - --|*sec|4*a - --|   sec(4*a)*sec(5*a)*sec|4*a - --|*sec|5*a - --|
                     \      2 /    \      2 /                        \      2 /    \      2 /
$$\frac{4}{\sec{\left(4 a \right)} \sec{\left(5 a \right)} \sec{\left(4 a - \frac{\pi}{2} \right)} \sec{\left(5 a - \frac{\pi}{2} \right)}} + \frac{4}{\sec{\left(3 a \right)} \sec{\left(4 a \right)} \sec{\left(3 a - \frac{\pi}{2} \right)} \sec{\left(4 a - \frac{\pi}{2} \right)}}$$
                      4                                               4                      
--------------------------------------------- + ---------------------------------------------
                     /pi      \    /pi      \                        /pi      \    /pi      \
csc(3*a)*csc(4*a)*csc|-- - 4*a|*csc|-- - 3*a|   csc(4*a)*csc(5*a)*csc|-- - 5*a|*csc|-- - 4*a|
                     \2       /    \2       /                        \2       /    \2       /
$$\frac{4}{\csc{\left(4 a \right)} \csc{\left(5 a \right)} \csc{\left(- 5 a + \frac{\pi}{2} \right)} \csc{\left(- 4 a + \frac{\pi}{2} \right)}} + \frac{4}{\csc{\left(3 a \right)} \csc{\left(4 a \right)} \csc{\left(- 4 a + \frac{\pi}{2} \right)} \csc{\left(- 3 a + \frac{\pi}{2} \right)}}$$
     2                  /pi      \                          2                  /pi      \                  
4*cos (4*a)*cos(3*a)*csc|-- - 4*a|*sin(3*a)*sin(4*a) + 4*cos (4*a)*cos(5*a)*csc|-- - 4*a|*sin(4*a)*sin(5*a)
                        \2       /                                             \2       /                  
$$4 \sin{\left(3 a \right)} \sin{\left(4 a \right)} \cos{\left(3 a \right)} \cos^{2}{\left(4 a \right)} \csc{\left(- 4 a + \frac{\pi}{2} \right)} + 4 \sin{\left(4 a \right)} \sin{\left(5 a \right)} \cos^{2}{\left(4 a \right)} \cos{\left(5 a \right)} \csc{\left(- 4 a + \frac{\pi}{2} \right)}$$
      4*tan(3*a)*tan(4*a)               4*tan(4*a)*tan(5*a)      
------------------------------- + -------------------------------
/       2     \ /       2     \   /       2     \ /       2     \
\1 + tan (3*a)/*\1 + tan (4*a)/   \1 + tan (4*a)/*\1 + tan (5*a)/
$$\frac{4 \tan{\left(4 a \right)} \tan{\left(5 a \right)}}{\left(\tan^{2}{\left(4 a \right)} + 1\right) \left(\tan^{2}{\left(5 a \right)} + 1\right)} + \frac{4 \tan{\left(3 a \right)} \tan{\left(4 a \right)}}{\left(\tan^{2}{\left(3 a \right)} + 1\right) \left(\tan^{2}{\left(4 a \right)} + 1\right)}$$
      4*cot(3*a)*cot(4*a)               4*cot(4*a)*cot(5*a)      
------------------------------- + -------------------------------
/       2     \ /       2     \   /       2     \ /       2     \
\1 + cot (3*a)/*\1 + cot (4*a)/   \1 + cot (4*a)/*\1 + cot (5*a)/
$$\frac{4 \cot{\left(4 a \right)} \cot{\left(5 a \right)}}{\left(\cot^{2}{\left(4 a \right)} + 1\right) \left(\cot^{2}{\left(5 a \right)} + 1\right)} + \frac{4 \cot{\left(3 a \right)} \cot{\left(4 a \right)}}{\left(\cot^{2}{\left(3 a \right)} + 1\right) \left(\cot^{2}{\left(4 a \right)} + 1\right)}$$
     2         2                                                 2         2                                         
4*cos (3*a)*cos (4*a)*sec(3*a)*sec(4*a)*sin(3*a)*sin(4*a) + 4*cos (4*a)*cos (5*a)*sec(4*a)*sec(5*a)*sin(4*a)*sin(5*a)
$$4 \sin{\left(3 a \right)} \sin{\left(4 a \right)} \cos^{2}{\left(3 a \right)} \cos^{2}{\left(4 a \right)} \sec{\left(3 a \right)} \sec{\left(4 a \right)} + 4 \sin{\left(4 a \right)} \sin{\left(5 a \right)} \cos^{2}{\left(4 a \right)} \cos^{2}{\left(5 a \right)} \sec{\left(4 a \right)} \sec{\left(5 a \right)}$$
     2         2/      pi\ /       2/      pi\\                 2         2/      pi\ /       2/      pi\\         
2*cos (3*a)*sin |4*a + --|*|1 - cot |4*a + --||*tan(3*a) + 2*cos (5*a)*sin |4*a + --|*|1 - cot |4*a + --||*tan(5*a)
                \      4 / \        \      4 //                            \      4 / \        \      4 //         
$$2 \cdot \left(- \cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right) \sin^{2}{\left(4 a + \frac{\pi}{4} \right)} \cos^{2}{\left(3 a \right)} \tan{\left(3 a \right)} + 2 \cdot \left(- \cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right) \sin^{2}{\left(4 a + \frac{\pi}{4} \right)} \cos^{2}{\left(5 a \right)} \tan{\left(5 a \right)}$$
                        4                                                   4                        
------------------------------------------------- + -------------------------------------------------
/        1    \ /        1    \                     /        1    \ /        1    \                  
|1 + ---------|*|1 + ---------|*cot(3*a)*cot(4*a)   |1 + ---------|*|1 + ---------|*cot(4*a)*cot(5*a)
|       2     | |       2     |                     |       2     | |       2     |                  
\    cot (3*a)/ \    cot (4*a)/                     \    cot (4*a)/ \    cot (5*a)/                  
$$\frac{4}{\left(1 + \frac{1}{\cot^{2}{\left(4 a \right)}}\right) \left(1 + \frac{1}{\cot^{2}{\left(5 a \right)}}\right) \cot{\left(4 a \right)} \cot{\left(5 a \right)}} + \frac{4}{\left(1 + \frac{1}{\cot^{2}{\left(3 a \right)}}\right) \left(1 + \frac{1}{\cot^{2}{\left(4 a \right)}}\right) \cot{\left(3 a \right)} \cot{\left(4 a \right)}}$$
  //   0      for 6*a mod pi = 0\                       //    0      for 10*a mod pi = 0\                  
2*|<                            |*cos(4*a)*sin(4*a) + 2*|<                              |*cos(4*a)*sin(4*a)
  \\sin(6*a)      otherwise     /                       \\sin(10*a)       otherwise     /                  
$$\left(2 \left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\sin{\left(6 a \right)} & \text{otherwise} \end{cases}\right) \sin{\left(4 a \right)} \cos{\left(4 a \right)}\right) + \left(2 \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\sin{\left(10 a \right)} & \text{otherwise} \end{cases}\right) \sin{\left(4 a \right)} \cos{\left(4 a \right)}\right)$$
     2      //   0      for 6*a mod pi = 0\                 2      //    0      for 10*a mod pi = 0\         
2*sin (4*a)*|<                            |*cot(4*a) + 2*sin (4*a)*|<                              |*cot(4*a)
            \\sin(6*a)      otherwise     /                        \\sin(10*a)       otherwise     /         
$$\left(2 \left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\sin{\left(6 a \right)} & \text{otherwise} \end{cases}\right) \sin^{2}{\left(4 a \right)} \cot{\left(4 a \right)}\right) + \left(2 \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\sin{\left(10 a \right)} & \text{otherwise} \end{cases}\right) \sin^{2}{\left(4 a \right)} \cot{\left(4 a \right)}\right)$$
      2         2         2         2/pi      \         2         2         2         2/pi      \
16*cos (3*a)*sin (3*a)*sin (4*a)*sin |-- + 4*a|   16*cos (5*a)*sin (4*a)*sin (5*a)*sin |-- + 4*a|
                                     \2       /                                        \2       /
----------------------------------------------- + -----------------------------------------------
               sin(6*a)*sin(8*a)                                 sin(8*a)*sin(10*a)              
$$\frac{16 \sin^{2}{\left(3 a \right)} \sin^{2}{\left(4 a \right)} \sin^{2}{\left(4 a + \frac{\pi}{2} \right)} \cos^{2}{\left(3 a \right)}}{\sin{\left(6 a \right)} \sin{\left(8 a \right)}} + \frac{16 \sin^{2}{\left(4 a \right)} \sin^{2}{\left(5 a \right)} \sin^{2}{\left(4 a + \frac{\pi}{2} \right)} \cos^{2}{\left(5 a \right)}}{\sin{\left(8 a \right)} \sin{\left(10 a \right)}}$$
      2         2         2/pi      \    2/pi      \         2         2         2/pi      \    2/pi      \
16*sin (3*a)*sin (4*a)*sin |-- + 3*a|*sin |-- + 4*a|   16*sin (4*a)*sin (5*a)*sin |-- + 4*a|*sin |-- + 5*a|
                           \2       /     \2       /                              \2       /     \2       /
---------------------------------------------------- + ----------------------------------------------------
                 sin(6*a)*sin(8*a)                                      sin(8*a)*sin(10*a)                 
$$\frac{16 \sin^{2}{\left(3 a \right)} \sin^{2}{\left(4 a \right)} \sin^{2}{\left(3 a + \frac{\pi}{2} \right)} \sin^{2}{\left(4 a + \frac{\pi}{2} \right)}}{\sin{\left(6 a \right)} \sin{\left(8 a \right)}} + \frac{16 \sin^{2}{\left(4 a \right)} \sin^{2}{\left(5 a \right)} \sin^{2}{\left(4 a + \frac{\pi}{2} \right)} \sin^{2}{\left(5 a + \frac{\pi}{2} \right)}}{\sin{\left(8 a \right)} \sin{\left(10 a \right)}}$$
   /          6            2            4   \                                      /          6            2            4   \                                
16*\1 - 16*sin (a) - 10*sin (a) + 24*sin (a)/*cos(a)*cos(3*a)*sin(a)*sin(3*a) + 16*\1 - 16*sin (a) - 10*sin (a) + 24*sin (a)/*cos(a)*cos(5*a)*sin(a)*sin(5*a)
$$16 \left(- 16 \sin^{6}{\left(a \right)} + 24 \sin^{4}{\left(a \right)} - 10 \sin^{2}{\left(a \right)} + 1\right) \sin{\left(a \right)} \sin{\left(3 a \right)} \cos{\left(a \right)} \cos{\left(3 a \right)} + 16 \left(- 16 \sin^{6}{\left(a \right)} + 24 \sin^{4}{\left(a \right)} - 10 \sin^{2}{\left(a \right)} + 1\right) \sin{\left(a \right)} \sin{\left(5 a \right)} \cos{\left(a \right)} \cos{\left(5 a \right)}$$
    /       2/      pi\\                   /       2/      pi\\            
  2*|1 - cot |4*a + --||*tan(3*a)        2*|1 - cot |4*a + --||*tan(5*a)   
    \        \      4 //                   \        \      4 //            
------------------------------------ + ------------------------------------
/       2/      pi\\ /       2     \   /       2/      pi\\ /       2     \
|1 + cot |4*a + --||*\1 + tan (3*a)/   |1 + cot |4*a + --||*\1 + tan (5*a)/
\        \      4 //                   \        \      4 //                
$$\frac{2 \cdot \left(- \cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right) \tan{\left(5 a \right)}}{\left(\tan^{2}{\left(5 a \right)} + 1\right) \left(\cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right)} + \frac{2 \cdot \left(- \cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right) \tan{\left(3 a \right)}}{\left(\tan^{2}{\left(3 a \right)} + 1\right) \left(\cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right)}$$
              2               2                2 /                                                               2                          2         \         
(1 + cos(4*a)) *(1 + tan(2*a)) *(-1 + tan(2*a)) *\-tan(3*a) - tan(5*a) + 2*sin(3*a) + 2*sin(5*a) + (1 - cos(3*a)) *tan(3*a) + (1 - cos(5*a)) *tan(5*a)/*tan(4*a)
$$\left(\cos{\left(4 a \right)} + 1\right)^{2} \left(\tan{\left(2 a \right)} - 1\right)^{2} \left(\tan{\left(2 a \right)} + 1\right)^{2} \left(\left(- \cos{\left(3 a \right)} + 1\right)^{2} \tan{\left(3 a \right)} + \left(- \cos{\left(5 a \right)} + 1\right)^{2} \tan{\left(5 a \right)} + 2 \sin{\left(3 a \right)} + 2 \sin{\left(5 a \right)} - \tan{\left(3 a \right)} - \tan{\left(5 a \right)}\right) \tan{\left(4 a \right)}$$
   2/      pi\ /       2/      pi\\ /       2/      pi\\                     2/      pi\ /       2/      pi\\ /       2/      pi\\                
sin |4*a + --|*|1 - cot |3*a + --||*|1 - cot |4*a + --||*(1 + sin(6*a))   sin |4*a + --|*|1 - cot |4*a + --||*|1 - cot |5*a + --||*(1 + sin(10*a))
    \      4 / \        \      4 // \        \      4 //                      \      4 / \        \      4 // \        \      4 //                
----------------------------------------------------------------------- + ------------------------------------------------------------------------
                                   2                                                                         2                                    
$$\frac{\left(- \cot^{2}{\left(3 a + \frac{\pi}{4} \right)} + 1\right) \left(- \cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right) \left(\sin{\left(6 a \right)} + 1\right) \sin^{2}{\left(4 a + \frac{\pi}{4} \right)}}{2} + \frac{\left(- \cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right) \left(- \cot^{2}{\left(5 a + \frac{\pi}{4} \right)} + 1\right) \left(\sin{\left(10 a \right)} + 1\right) \sin^{2}{\left(4 a + \frac{\pi}{4} \right)}}{2}$$
  //      0        for 6*a mod pi = 0\              //      0        for 10*a mod pi = 0\         
  ||                                 |              ||                                  |         
  ||  2*cot(3*a)                     |              ||  2*cot(5*a)                      |         
2*|<-------------      otherwise     |*cot(4*a)   2*|<-------------       otherwise     |*cot(4*a)
  ||       2                         |              ||       2                          |         
  ||1 + cot (3*a)                    |              ||1 + cot (5*a)                     |         
  \\                                 /              \\                                  /         
----------------------------------------------- + ------------------------------------------------
                        2                                                 2                       
                 1 + cot (4*a)                                     1 + cot (4*a)                  
$$\left(\frac{2 \left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2 \cot{\left(3 a \right)}}{\cot^{2}{\left(3 a \right)} + 1} & \text{otherwise} \end{cases}\right) \cot{\left(4 a \right)}}{\cot^{2}{\left(4 a \right)} + 1}\right) + \left(\frac{2 \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2 \cot{\left(5 a \right)}}{\cot^{2}{\left(5 a \right)} + 1} & \text{otherwise} \end{cases}\right) \cot{\left(4 a \right)}}{\cot^{2}{\left(4 a \right)} + 1}\right)$$
//   0      for 6*a mod pi = 0\ //   0      for 8*a mod pi = 0\   //   0      for 8*a mod pi = 0\ //    0      for 10*a mod pi = 0\
|<                            |*|<                            | + |<                            |*|<                              |
\\sin(6*a)      otherwise     / \\sin(8*a)      otherwise     /   \\sin(8*a)      otherwise     / \\sin(10*a)       otherwise     /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\sin{\left(6 a \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\sin{\left(8 a \right)} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\sin{\left(8 a \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\sin{\left(10 a \right)} & \text{otherwise} \end{cases}\right)\right)$$
/        2/      pi\\ /        2/      pi\\   /        2/      pi\\ /        2/      pi\\
|-1 + tan |3*a + --||*|-1 + tan |4*a + --||   |-1 + tan |4*a + --||*|-1 + tan |5*a + --||
\         \      4 // \         \      4 //   \         \      4 // \         \      4 //
------------------------------------------- + -------------------------------------------
 /       2/      pi\\ /       2/      pi\\     /       2/      pi\\ /       2/      pi\\ 
 |1 + tan |3*a + --||*|1 + tan |4*a + --||     |1 + tan |4*a + --||*|1 + tan |5*a + --|| 
 \        \      4 // \        \      4 //     \        \      4 // \        \      4 // 
$$\frac{\left(\tan^{2}{\left(3 a + \frac{\pi}{4} \right)} - 1\right) \left(\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1\right)}{\left(\tan^{2}{\left(3 a + \frac{\pi}{4} \right)} + 1\right) \left(\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right)} + \frac{\left(\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1\right) \left(\tan^{2}{\left(5 a + \frac{\pi}{4} \right)} - 1\right)}{\left(\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right) \left(\tan^{2}{\left(5 a + \frac{\pi}{4} \right)} + 1\right)}$$
/       2/      pi\\ /       2/      pi\\   /       2/      pi\\ /       2/      pi\\
|1 - cot |3*a + --||*|1 - cot |4*a + --||   |1 - cot |4*a + --||*|1 - cot |5*a + --||
\        \      4 // \        \      4 //   \        \      4 // \        \      4 //
----------------------------------------- + -----------------------------------------
/       2/      pi\\ /       2/      pi\\   /       2/      pi\\ /       2/      pi\\
|1 + cot |3*a + --||*|1 + cot |4*a + --||   |1 + cot |4*a + --||*|1 + cot |5*a + --||
\        \      4 // \        \      4 //   \        \      4 // \        \      4 //
$$\frac{\left(- \cot^{2}{\left(3 a + \frac{\pi}{4} \right)} + 1\right) \left(- \cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right)}{\left(\cot^{2}{\left(3 a + \frac{\pi}{4} \right)} + 1\right) \left(\cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right)} + \frac{\left(- \cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right) \left(- \cot^{2}{\left(5 a + \frac{\pi}{4} \right)} + 1\right)}{\left(\cot^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1\right) \left(\cot^{2}{\left(5 a + \frac{\pi}{4} \right)} + 1\right)}$$
//   0      for 6*a mod pi = 0\ //   0      for 8*a mod pi = 0\   //   0      for 8*a mod pi = 0\ //    0      for 10*a mod pi = 0\
||                            | ||                            |   ||                            | ||                              |
|<   1                        |*|<   1                        | + |<   1                        |*|<    1                         |
||--------      otherwise     | ||--------      otherwise     |   ||--------      otherwise     | ||---------       otherwise     |
\\csc(6*a)                    / \\csc(8*a)                    /   \\csc(8*a)                    / \\csc(10*a)                     /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{1}{\csc{\left(6 a \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{1}{\csc{\left(8 a \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{1}{\csc{\left(8 a \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{1}{\csc{\left(10 a \right)}} & \text{otherwise} \end{cases}\right)\right)$$
                 2                2                                      2                2                  
  /       2     \  /       2/3*a\\                        /       2     \  /       2/5*a\\                   
4*\1 - tan (2*a)/ *|1 - tan |---|| *tan(3*a)*tan(4*a)   4*\1 - tan (2*a)/ *|1 - tan |---|| *tan(4*a)*tan(5*a)
                   \        \ 2 //                                         \        \ 2 //                   
----------------------------------------------------- + -----------------------------------------------------
                         2                2                                      2                2          
          /       2     \  /       2/3*a\\                        /       2     \  /       2/5*a\\           
          \1 + tan (2*a)/ *|1 + tan |---||                        \1 + tan (2*a)/ *|1 + tan |---||           
                           \        \ 2 //                                         \        \ 2 //           
$$\frac{4 \left(- \tan^{2}{\left(\frac{3 a}{2} \right)} + 1\right)^{2} \left(- \tan^{2}{\left(2 a \right)} + 1\right)^{2} \tan{\left(3 a \right)} \tan{\left(4 a \right)}}{\left(\tan^{2}{\left(\frac{3 a}{2} \right)} + 1\right)^{2} \left(\tan^{2}{\left(2 a \right)} + 1\right)^{2}} + \frac{4 \left(- \tan^{2}{\left(2 a \right)} + 1\right)^{2} \left(- \tan^{2}{\left(\frac{5 a}{2} \right)} + 1\right)^{2} \tan{\left(4 a \right)} \tan{\left(5 a \right)}}{\left(\tan^{2}{\left(2 a \right)} + 1\right)^{2} \left(\tan^{2}{\left(\frac{5 a}{2} \right)} + 1\right)^{2}}$$
                      2         2                                             2         2                     
                16*sin (3*a)*sin (4*a)                                  16*sin (4*a)*sin (5*a)                
----------------------------------------------------- + ------------------------------------------------------
/         4     \ /         4     \                     /         4     \ /         4     \                   
|    4*sin (3*a)| |    4*sin (4*a)|                     |    4*sin (4*a)| |    4*sin (5*a)|                   
|1 + -----------|*|1 + -----------|*sin(6*a)*sin(8*a)   |1 + -----------|*|1 + -----------|*sin(8*a)*sin(10*a)
|        2      | |        2      |                     |        2      | |        2      |                   
\     sin (6*a) / \     sin (8*a) /                     \     sin (8*a) / \     sin (10*a)/                   
$$\frac{16 \sin^{2}{\left(4 a \right)} \sin^{2}{\left(5 a \right)}}{\left(\frac{4 \sin^{4}{\left(4 a \right)}}{\sin^{2}{\left(8 a \right)}} + 1\right) \left(\frac{4 \sin^{4}{\left(5 a \right)}}{\sin^{2}{\left(10 a \right)}} + 1\right) \sin{\left(8 a \right)} \sin{\left(10 a \right)}} + \frac{16 \sin^{2}{\left(3 a \right)} \sin^{2}{\left(4 a \right)}}{\left(\frac{4 \sin^{4}{\left(3 a \right)}}{\sin^{2}{\left(6 a \right)}} + 1\right) \left(\frac{4 \sin^{4}{\left(4 a \right)}}{\sin^{2}{\left(8 a \right)}} + 1\right) \sin{\left(6 a \right)} \sin{\left(8 a \right)}}$$
//      0        for 6*a mod pi = 0\ //      0        for 8*a mod pi = 0\   //      0        for 8*a mod pi = 0\ //      0         for 10*a mod pi = 0\
||                                 | ||                                 |   ||                                 | ||                                   |
|<   /      pi\                    |*|<   /      pi\                    | + |<   /      pi\                    |*|<   /       pi\                     |
||cos|6*a - --|      otherwise     | ||cos|8*a - --|      otherwise     |   ||cos|8*a - --|      otherwise     | ||cos|10*a - --|       otherwise     |
\\   \      2 /                    / \\   \      2 /                    /   \\   \      2 /                    / \\   \       2 /                     /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\cos{\left(6 a - \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\cos{\left(8 a - \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\cos{\left(8 a - \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\cos{\left(10 a - \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}\right)\right)$$
                      //      0        for 6*a mod pi = 0\                         //      0        for 10*a mod pi = 0\
                      ||                                 |                         ||                                  |
/        2/      pi\\ ||  2*cot(3*a)                     |   /        2/      pi\\ ||  2*cot(5*a)                      |
|-1 + tan |4*a + --||*|<-------------      otherwise     |   |-1 + tan |4*a + --||*|<-------------       otherwise     |
\         \      4 // ||       2                         |   \         \      4 // ||       2                          |
                      ||1 + cot (3*a)                    |                         ||1 + cot (5*a)                     |
                      \\                                 /                         \\                                  /
---------------------------------------------------------- + -----------------------------------------------------------
                           2/      pi\                                                   2/      pi\                    
                    1 + tan |4*a + --|                                            1 + tan |4*a + --|                    
                            \      4 /                                                    \      4 /                    
$$\left(\frac{\left(\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1\right) \left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2 \cot{\left(3 a \right)}}{\cot^{2}{\left(3 a \right)} + 1} & \text{otherwise} \end{cases}\right)}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1}\right) + \left(\frac{\left(\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2 \cot{\left(5 a \right)}}{\cot^{2}{\left(5 a \right)} + 1} & \text{otherwise} \end{cases}\right)}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1}\right)$$
//      0        for 6*a mod pi = 0\ //      0        for 8*a mod pi = 0\   //      0        for 8*a mod pi = 0\ //      0         for 10*a mod pi = 0\
||                                 | ||                                 |   ||                                 | ||                                   |
||      1                          | ||      1                          |   ||      1                          | ||      1                            |
|<-------------      otherwise     |*|<-------------      otherwise     | + |<-------------      otherwise     |*|<--------------       otherwise     |
||   /      pi\                    | ||   /      pi\                    |   ||   /      pi\                    | ||   /       pi\                     |
||sec|6*a - --|                    | ||sec|8*a - --|                    |   ||sec|8*a - --|                    | ||sec|10*a - --|                     |
\\   \      2 /                    / \\   \      2 /                    /   \\   \      2 /                    / \\   \       2 /                     /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{1}{\sec{\left(6 a - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{1}{\sec{\left(8 a - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{1}{\sec{\left(8 a - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{1}{\sec{\left(10 a - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right)$$
   /                   2                    \                                                          /                   2                    \                                                    
   |/   2         2   \         2       2   | /   2         2   \                                      |/   2         2   \         2       2   | /   2         2   \                                
16*\\cos (a) - sin (a)/  - 4*cos (a)*sin (a)/*\cos (a) - sin (a)/*cos(a)*cos(3*a)*sin(a)*sin(3*a) + 16*\\cos (a) - sin (a)/  - 4*cos (a)*sin (a)/*\cos (a) - sin (a)/*cos(a)*cos(5*a)*sin(a)*sin(5*a)
$$16 \left(- 4 \sin^{2}{\left(a \right)} \cos^{2}{\left(a \right)} + \left(- \sin^{2}{\left(a \right)} + \cos^{2}{\left(a \right)}\right)^{2}\right) \left(- \sin^{2}{\left(a \right)} + \cos^{2}{\left(a \right)}\right) \sin{\left(a \right)} \sin{\left(3 a \right)} \cos{\left(a \right)} \cos{\left(3 a \right)} + 16 \left(- 4 \sin^{2}{\left(a \right)} \cos^{2}{\left(a \right)} + \left(- \sin^{2}{\left(a \right)} + \cos^{2}{\left(a \right)}\right)^{2}\right) \left(- \sin^{2}{\left(a \right)} + \cos^{2}{\left(a \right)}\right) \sin{\left(a \right)} \sin{\left(5 a \right)} \cos{\left(a \right)} \cos{\left(5 a \right)}$$
  //     1        for 2*a mod pi = 0\ //    1      for 3*a mod 2*pi = 0\                       //     1        for 2*a mod pi = 0\ //    1      for 5*a mod 2*pi = 0\                  
  ||                                | ||                               |                       ||                                | ||                               |                  
4*|<1 + cos(8*a)                    |*|<   2                           |*tan(3*a)*tan(4*a) + 4*|<1 + cos(8*a)                    |*|<   2                           |*tan(4*a)*tan(5*a)
  ||------------      otherwise     | ||cos (3*a)       otherwise      |                       ||------------      otherwise     | ||cos (5*a)       otherwise      |                  
  \\     2                          / \\                               /                       \\     2                          / \\                               /                  
$$\left(4 \left(\begin{cases} 1 & \text{for}\: 2 a \bmod \pi = 0 \\\frac{\cos{\left(8 a \right)} + 1}{2} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: 3 a \bmod 2 \pi = 0 \\\cos^{2}{\left(3 a \right)} & \text{otherwise} \end{cases}\right) \tan{\left(3 a \right)} \tan{\left(4 a \right)}\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: 2 a \bmod \pi = 0 \\\frac{\cos{\left(8 a \right)} + 1}{2} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: 5 a \bmod 2 \pi = 0 \\\cos^{2}{\left(5 a \right)} & \text{otherwise} \end{cases}\right) \tan{\left(4 a \right)} \tan{\left(5 a \right)}\right)$$
                         4*sec(3*a)*sec(4*a)                                                     4*sec(4*a)*sec(5*a)                         
--------------------------------------------------------------------- + ---------------------------------------------------------------------
/         2        \ /         2        \                               /         2        \ /         2        \                            
|      sec (3*a)   | |      sec (4*a)   |    /      pi\    /      pi\   |      sec (4*a)   | |      sec (5*a)   |    /      pi\    /      pi\
|1 + --------------|*|1 + --------------|*sec|3*a - --|*sec|4*a - --|   |1 + --------------|*|1 + --------------|*sec|4*a - --|*sec|5*a - --|
|       2/      pi\| |       2/      pi\|    \      2 /    \      2 /   |       2/      pi\| |       2/      pi\|    \      2 /    \      2 /
|    sec |3*a - --|| |    sec |4*a - --||                               |    sec |4*a - --|| |    sec |5*a - --||                            
\        \      2 // \        \      2 //                               \        \      2 // \        \      2 //                            
$$\frac{4 \sec{\left(4 a \right)} \sec{\left(5 a \right)}}{\left(\frac{\sec^{2}{\left(4 a \right)}}{\sec^{2}{\left(4 a - \frac{\pi}{2} \right)}} + 1\right) \left(\frac{\sec^{2}{\left(5 a \right)}}{\sec^{2}{\left(5 a - \frac{\pi}{2} \right)}} + 1\right) \sec{\left(4 a - \frac{\pi}{2} \right)} \sec{\left(5 a - \frac{\pi}{2} \right)}} + \frac{4 \sec{\left(3 a \right)} \sec{\left(4 a \right)}}{\left(\frac{\sec^{2}{\left(3 a \right)}}{\sec^{2}{\left(3 a - \frac{\pi}{2} \right)}} + 1\right) \left(\frac{\sec^{2}{\left(4 a \right)}}{\sec^{2}{\left(4 a - \frac{\pi}{2} \right)}} + 1\right) \sec{\left(3 a - \frac{\pi}{2} \right)} \sec{\left(4 a - \frac{\pi}{2} \right)}}$$
                    /      pi\    /      pi\                                      /      pi\    /      pi\               
               4*cos|3*a - --|*cos|4*a - --|                                 4*cos|4*a - --|*cos|5*a - --|               
                    \      2 /    \      2 /                                      \      2 /    \      2 /               
----------------------------------------------------------- + -----------------------------------------------------------
/       2/      pi\\ /       2/      pi\\                     /       2/      pi\\ /       2/      pi\\                  
|    cos |3*a - --|| |    cos |4*a - --||                     |    cos |4*a - --|| |    cos |5*a - --||                  
|        \      2 /| |        \      2 /|                     |        \      2 /| |        \      2 /|                  
|1 + --------------|*|1 + --------------|*cos(3*a)*cos(4*a)   |1 + --------------|*|1 + --------------|*cos(4*a)*cos(5*a)
|         2        | |         2        |                     |         2        | |         2        |                  
\      cos (3*a)   / \      cos (4*a)   /                     \      cos (4*a)   / \      cos (5*a)   /                  
$$\frac{4 \cos{\left(4 a - \frac{\pi}{2} \right)} \cos{\left(5 a - \frac{\pi}{2} \right)}}{\left(1 + \frac{\cos^{2}{\left(4 a - \frac{\pi}{2} \right)}}{\cos^{2}{\left(4 a \right)}}\right) \left(1 + \frac{\cos^{2}{\left(5 a - \frac{\pi}{2} \right)}}{\cos^{2}{\left(5 a \right)}}\right) \cos{\left(4 a \right)} \cos{\left(5 a \right)}} + \frac{4 \cos{\left(3 a - \frac{\pi}{2} \right)} \cos{\left(4 a - \frac{\pi}{2} \right)}}{\left(1 + \frac{\cos^{2}{\left(3 a - \frac{\pi}{2} \right)}}{\cos^{2}{\left(3 a \right)}}\right) \left(1 + \frac{\cos^{2}{\left(4 a - \frac{\pi}{2} \right)}}{\cos^{2}{\left(4 a \right)}}\right) \cos{\left(3 a \right)} \cos{\left(4 a \right)}}$$
//      0        for 6*a mod pi = 0\ //      0        for 8*a mod pi = 0\   //      0        for 8*a mod pi = 0\ //      0        for 10*a mod pi = 0\
||                                 | ||                                 |   ||                                 | ||                                  |
||  2*tan(3*a)                     | ||  2*tan(4*a)                     |   ||  2*tan(4*a)                     | ||  2*tan(5*a)                      |
|<-------------      otherwise     |*|<-------------      otherwise     | + |<-------------      otherwise     |*|<-------------       otherwise     |
||       2                         | ||       2                         |   ||       2                         | ||       2                          |
||1 + tan (3*a)                    | ||1 + tan (4*a)                    |   ||1 + tan (4*a)                    | ||1 + tan (5*a)                     |
\\                                 / \\                                 /   \\                                 / \\                                  /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2 \tan{\left(3 a \right)}}{\tan^{2}{\left(3 a \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \tan{\left(4 a \right)}}{\tan^{2}{\left(4 a \right)} + 1} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \tan{\left(4 a \right)}}{\tan^{2}{\left(4 a \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2 \tan{\left(5 a \right)}}{\tan^{2}{\left(5 a \right)} + 1} & \text{otherwise} \end{cases}\right)\right)$$
//      0        for 6*a mod pi = 0\ //      0        for 8*a mod pi = 0\   //      0        for 8*a mod pi = 0\ //      0        for 10*a mod pi = 0\
||                                 | ||                                 |   ||                                 | ||                                  |
||  2*cot(3*a)                     | ||  2*cot(4*a)                     |   ||  2*cot(4*a)                     | ||  2*cot(5*a)                      |
|<-------------      otherwise     |*|<-------------      otherwise     | + |<-------------      otherwise     |*|<-------------       otherwise     |
||       2                         | ||       2                         |   ||       2                         | ||       2                          |
||1 + cot (3*a)                    | ||1 + cot (4*a)                    |   ||1 + cot (4*a)                    | ||1 + cot (5*a)                     |
\\                                 / \\                                 /   \\                                 / \\                                  /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2 \cot{\left(3 a \right)}}{\cot^{2}{\left(3 a \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \cot{\left(4 a \right)}}{\cot^{2}{\left(4 a \right)} + 1} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \cot{\left(4 a \right)}}{\cot^{2}{\left(4 a \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2 \cot{\left(5 a \right)}}{\cot^{2}{\left(5 a \right)} + 1} & \text{otherwise} \end{cases}\right)\right)$$
                    /pi      \    /pi      \                                      /pi      \    /pi      \               
               4*csc|-- - 4*a|*csc|-- - 3*a|                                 4*csc|-- - 5*a|*csc|-- - 4*a|               
                    \2       /    \2       /                                      \2       /    \2       /               
----------------------------------------------------------- + -----------------------------------------------------------
/       2/pi      \\ /       2/pi      \\                     /       2/pi      \\ /       2/pi      \\                  
|    csc |-- - 3*a|| |    csc |-- - 4*a||                     |    csc |-- - 4*a|| |    csc |-- - 5*a||                  
|        \2       /| |        \2       /|                     |        \2       /| |        \2       /|                  
|1 + --------------|*|1 + --------------|*csc(3*a)*csc(4*a)   |1 + --------------|*|1 + --------------|*csc(4*a)*csc(5*a)
|         2        | |         2        |                     |         2        | |         2        |                  
\      csc (3*a)   / \      csc (4*a)   /                     \      csc (4*a)   / \      csc (5*a)   /                  
$$\frac{4 \csc{\left(- 5 a + \frac{\pi}{2} \right)} \csc{\left(- 4 a + \frac{\pi}{2} \right)}}{\left(1 + \frac{\csc^{2}{\left(- 4 a + \frac{\pi}{2} \right)}}{\csc^{2}{\left(4 a \right)}}\right) \left(1 + \frac{\csc^{2}{\left(- 5 a + \frac{\pi}{2} \right)}}{\csc^{2}{\left(5 a \right)}}\right) \csc{\left(4 a \right)} \csc{\left(5 a \right)}} + \frac{4 \csc{\left(- 4 a + \frac{\pi}{2} \right)} \csc{\left(- 3 a + \frac{\pi}{2} \right)}}{\left(1 + \frac{\csc^{2}{\left(- 3 a + \frac{\pi}{2} \right)}}{\csc^{2}{\left(3 a \right)}}\right) \left(1 + \frac{\csc^{2}{\left(- 4 a + \frac{\pi}{2} \right)}}{\csc^{2}{\left(4 a \right)}}\right) \csc{\left(3 a \right)} \csc{\left(4 a \right)}}$$
                                //                         /      3*pi\             \                                     //                         /      3*pi\             \
                                ||         1           for |8*a + ----| mod 2*pi = 0|                                     ||         1           for |8*a + ----| mod 2*pi = 0|
                                ||                         \       2  /             |                                     ||                         \       2  /             |
                                ||                                                  |                                     ||                                                  |
//   0      for 6*a mod pi = 0\ ||        2/      pi\                               |   //    0      for 10*a mod pi = 0\ ||        2/      pi\                               |
|<                            |*|<-1 + tan |4*a + --|                               | + |<                              |*|<-1 + tan |4*a + --|                               |
\\sin(6*a)      otherwise     / ||         \      4 /                               |   \\sin(10*a)       otherwise     / ||         \      4 /                               |
                                ||-------------------            otherwise          |                                     ||-------------------            otherwise          |
                                ||        2/      pi\                               |                                     ||        2/      pi\                               |
                                || 1 + tan |4*a + --|                               |                                     || 1 + tan |4*a + --|                               |
                                \\         \      4 /                               /                                     \\         \      4 /                               /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\sin{\left(6 a \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(8 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\sin{\left(10 a \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(8 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right)\right)$$
//           0              for 6*a mod pi = 0\ //           0              for 8*a mod pi = 0\   //           0              for 8*a mod pi = 0\ //           0              for 10*a mod pi = 0\
||                                            | ||                                            |   ||                                            | ||                                             |
||           2                                | ||           2                                |   ||           2                                | ||           2                                 |
||------------------------      otherwise     | ||------------------------      otherwise     |   ||------------------------      otherwise     | ||------------------------       otherwise     |
|
            
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2}{\left(1 + \frac{1}{\tan^{2}{\left(3 a \right)}}\right) \tan{\left(3 a \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2}{\left(1 + \frac{1}{\tan^{2}{\left(4 a \right)}}\right) \tan{\left(4 a \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2}{\left(1 + \frac{1}{\tan^{2}{\left(4 a \right)}}\right) \tan{\left(4 a \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2}{\left(1 + \frac{1}{\tan^{2}{\left(5 a \right)}}\right) \tan{\left(5 a \right)}} & \text{otherwise} \end{cases}\right)\right)$$
                                           //                         /      3*pi\             \   //                         /      3*pi\             \                                             
                                           ||         1           for |8*a + ----| mod 2*pi = 0|   ||         1           for |8*a + ----| mod 2*pi = 0|                                             
                                           ||                         \       2  /             |   ||                         \       2  /             |                                             
//              /      3*pi\             \ ||                                                  |   ||                                                  | //               /       3*pi\             \
||   1      for |6*a + ----| mod 2*pi = 0| ||        2/      pi\                               |   ||        2/      pi\                               | ||    1      for |10*a + ----| mod 2*pi = 0|
|<              \       2  /             |*|<-1 + tan |4*a + --|                               | + |<-1 + tan |4*a + --|                               |*|<               \        2  /             |
||                                       | ||         \      4 /                               |   ||         \      4 /                               | ||                                         |
\\sin(6*a)            otherwise          / ||-------------------            otherwise          |   ||-------------------            otherwise          | \\sin(10*a)            otherwise           /
                                           ||        2/      pi\                               |   ||        2/      pi\                               |                                             
                                           || 1 + tan |4*a + --|                               |   || 1 + tan |4*a + --|                               |                                             
                                           \\         \      4 /                               /   \\         \      4 /                               /                                             
$$\left(\left(\begin{cases} 1 & \text{for}\: \left(6 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\sin{\left(6 a \right)} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(8 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 1 & \text{for}\: \left(8 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(10 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\sin{\left(10 a \right)} & \text{otherwise} \end{cases}\right)\right)$$
                                     //                         /      3*pi\             \                                         //                         /      3*pi\             \
                                     ||         1           for |8*a + ----| mod 2*pi = 0|                                         ||         1           for |8*a + ----| mod 2*pi = 0|
//      0        for 6*a mod pi = 0\ ||                         \       2  /             |   //      0        for 10*a mod pi = 0\ ||                         \       2  /             |
||                                 | ||                                                  |   ||                                  | ||                                                  |
||  2*cot(3*a)                     | ||        2/      pi\                               |   ||  2*cot(5*a)                      | ||        2/      pi\                               |
|<-------------      otherwise     |*|<-1 + tan |4*a + --|                               | + |<-------------       otherwise     |*|<-1 + tan |4*a + --|                               |
||       2                         | ||         \      4 /                               |   ||       2                          | ||         \      4 /                               |
||1 + cot (3*a)                    | ||-------------------            otherwise          |   ||1 + cot (5*a)                     | ||-------------------            otherwise          |
\\                                 / ||        2/      pi\                               |   \\                                  / ||        2/      pi\                               |
                                     || 1 + tan |4*a + --|                               |                                         || 1 + tan |4*a + --|                               |
                                     \\         \      4 /                               /                                         \\         \      4 /                               /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2 \cot{\left(3 a \right)}}{\cot^{2}{\left(3 a \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(8 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2 \cot{\left(5 a \right)}}{\cot^{2}{\left(5 a \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(8 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right)\right)$$
//              0                for 6*a mod pi = 0\ //              0                for 8*a mod pi = 0\   //              0                for 8*a mod pi = 0\ //               0                 for 10*a mod pi = 0\
||                                                 | ||                                                 |   ||                                                 | ||                                                    |
|
            
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\sin{\left(6 a \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\sin{\left(8 a \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\sin{\left(8 a \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\sin{\left(10 a \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)\right)$$
//                         /      3*pi\             \ //                         /      3*pi\             \   //                         /      3*pi\             \ //                         /       3*pi\             \
||         1           for |6*a + ----| mod 2*pi = 0| ||         1           for |8*a + ----| mod 2*pi = 0|   ||         1           for |8*a + ----| mod 2*pi = 0| ||         1           for |10*a + ----| mod 2*pi = 0|
||                         \       2  /             | ||                         \       2  /             |   ||                         \       2  /             | ||                         \        2  /             |
||                                                  | ||                                                  |   ||                                                  | ||                                                   |
||        2/      pi\                               | ||        2/      pi\                               |   ||        2/      pi\                               | ||        2/      pi\                                |
|<-1 + tan |3*a + --|                               |*|<-1 + tan |4*a + --|                               | + |<-1 + tan |4*a + --|                               |*|<-1 + tan |5*a + --|                                |
||         \      4 /                               | ||         \      4 /                               |   ||         \      4 /                               | ||         \      4 /                                |
||-------------------            otherwise          | ||-------------------            otherwise          |   ||-------------------            otherwise          | ||-------------------            otherwise           |
||        2/      pi\                               | ||        2/      pi\                               |   ||        2/      pi\                               | ||        2/      pi\                                |
|| 1 + tan |3*a + --|                               | || 1 + tan |4*a + --|                               |   || 1 + tan |4*a + --|                               | || 1 + tan |5*a + --|                                |
\\         \      4 /                               / \\         \      4 /                               /   \\         \      4 /                               / \\         \      4 /                                /
$$\left(\left(\begin{cases} 1 & \text{for}\: \left(6 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(3 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(3 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(8 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 1 & \text{for}\: \left(8 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(4 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: \left(10 a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\tan^{2}{\left(5 a + \frac{\pi}{4} \right)} - 1}{\tan^{2}{\left(5 a + \frac{\pi}{4} \right)} + 1} & \text{otherwise} \end{cases}\right)\right)$$
//             0               for 6*a mod pi = 0\ //             0               for 8*a mod pi = 0\   //             0               for 8*a mod pi = 0\ //             0               for 10*a mod pi = 0\
||                                               | ||                                               |   ||                                               | ||                                                |
||          sin(6*a)                             | ||          sin(8*a)                             |   ||          sin(8*a)                             | ||         sin(10*a)                              |
||---------------------------      otherwise     | ||---------------------------      otherwise     |   ||---------------------------      otherwise     | ||---------------------------       otherwise     |
|
            
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{\sin{\left(6 a \right)}}{\left(1 + \frac{\sin^{2}{\left(6 a \right)}}{4 \sin^{4}{\left(3 a \right)}}\right) \sin^{2}{\left(3 a \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{\sin{\left(8 a \right)}}{\left(1 + \frac{\sin^{2}{\left(8 a \right)}}{4 \sin^{4}{\left(4 a \right)}}\right) \sin^{2}{\left(4 a \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{\sin{\left(8 a \right)}}{\left(1 + \frac{\sin^{2}{\left(8 a \right)}}{4 \sin^{4}{\left(4 a \right)}}\right) \sin^{2}{\left(4 a \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{\sin{\left(10 a \right)}}{\left(1 + \frac{\sin^{2}{\left(10 a \right)}}{4 \sin^{4}{\left(5 a \right)}}\right) \sin^{2}{\left(5 a \right)}} & \text{otherwise} \end{cases}\right)\right)$$
                                           //        1          for 3*a mod 2*pi = 0\                                              //        1          for 5*a mod 2*pi = 0\
  //        1          for 2*a mod pi = 0\ ||                                       |     //        1          for 2*a mod pi = 0\ ||                                       |
  ||                                     | ||                2                      |     ||                                     | ||                2                      |
  ||                2                    | ||/        2/3*a\\                       |     ||                2                    | ||/        2/5*a\\                       |
  ||/        2     \                     | |||-1 + cot |---||                       |     ||/        2     \                     | |||-1 + cot |---||                       |
4*|<\-1 + cot (2*a)/                     |*|<\         \ 2 //                       |   4*|<\-1 + cot (2*a)/                     |*|<\         \ 2 //                       |
  ||-----------------      otherwise     | ||-----------------       otherwise      |     ||-----------------      otherwise     | ||-----------------       otherwise      |
  ||                2                    | ||                2                      |     ||                2                    | ||                2                      |
  || /       2     \                     | || /       2/3*a\\                       |     || /       2     \                     | || /       2/5*a\\                       |
  \\ \1 + cot (2*a)/                     / || |1 + cot |---||                       |     \\ \1 + cot (2*a)/                     / || |1 + cot |---||                       |
                                           \\ \        \ 2 //                       /                                              \\ \        \ 2 //                       /
------------------------------------------------------------------------------------- + -------------------------------------------------------------------------------------
                                  cot(3*a)*cot(4*a)                                                                       cot(4*a)*cot(5*a)                                  
$$\left(\frac{4 \left(\begin{cases} 1 & \text{for}\: 2 a \bmod \pi = 0 \\\frac{\left(\cot^{2}{\left(2 a \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(2 a \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: 3 a \bmod 2 \pi = 0 \\\frac{\left(\cot^{2}{\left(\frac{3 a}{2} \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(\frac{3 a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)}{\cot{\left(3 a \right)} \cot{\left(4 a \right)}}\right) + \left(\frac{4 \left(\begin{cases} 1 & \text{for}\: 2 a \bmod \pi = 0 \\\frac{\left(\cot^{2}{\left(2 a \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(2 a \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 1 & \text{for}\: 5 a \bmod 2 \pi = 0 \\\frac{\left(\cot^{2}{\left(\frac{5 a}{2} \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(\frac{5 a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)}{\cot{\left(4 a \right)} \cot{\left(5 a \right)}}\right)$$
//                0                   for 6*a mod pi = 0\ //                0                   for 8*a mod pi = 0\   //                0                   for 8*a mod pi = 0\ //                 0                   for 10*a mod pi = 0\
||                                                      | ||                                                      |   ||                                                      | ||                                                        |
||/      0        for 6*a mod pi = 0                    | ||/      0        for 8*a mod pi = 0                    |   ||/      0        for 8*a mod pi = 0                    | ||/      0        for 10*a mod pi = 0                     |
|||                                                     | |||                                                     |   |||                                                     | |||                                                       |
|<|  2*cot(3*a)                                         |*|<|  2*cot(4*a)                                         | + |<|  2*cot(4*a)                                         |*|<|  2*cot(5*a)                                           |
||<-------------      otherwise           otherwise     | ||<-------------      otherwise           otherwise     |   ||<-------------      otherwise           otherwise     | ||<-------------       otherwise            otherwise     |
|||       2                                             | |||       2                                             |   |||       2                                             | |||       2                                               |
|||1 + cot (3*a)                                        | |||1 + cot (4*a)                                        |   |||1 + cot (4*a)                                        | |||1 + cot (5*a)                                          |
\\\                                                     / \\\                                                     /   \\\                                                     / \\\                                                       /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2 \cot{\left(3 a \right)}}{\cot^{2}{\left(3 a \right)} + 1} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \cot{\left(4 a \right)}}{\cot^{2}{\left(4 a \right)} + 1} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \cot{\left(4 a \right)}}{\cot^{2}{\left(4 a \right)} + 1} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2 \cot{\left(5 a \right)}}{\cot^{2}{\left(5 a \right)} + 1} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)\right)$$
//              0                for 6*a mod pi = 0\ //              0                for 8*a mod pi = 0\   //              0                for 8*a mod pi = 0\ //              0                for 10*a mod pi = 0\
||                                                 | ||                                                 |   ||                                                 | ||                                                  |
||            /      pi\                           | ||            /      pi\                           |   ||            /      pi\                           | ||            /      pi\                            |
||       2*sec|3*a - --|                           | ||       2*sec|4*a - --|                           |   ||       2*sec|4*a - --|                           | ||       2*sec|5*a - --|                            |
||            \      2 /                           | ||            \      2 /                           |   ||            \      2 /                           | ||            \      2 /                            |
||-----------------------------      otherwise     | ||-----------------------------      otherwise     |   ||-----------------------------      otherwise     | ||-----------------------------       otherwise     |
|
            
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2 \sec{\left(3 a - \frac{\pi}{2} \right)}}{\left(1 + \frac{\sec^{2}{\left(3 a - \frac{\pi}{2} \right)}}{\sec^{2}{\left(3 a \right)}}\right) \sec{\left(3 a \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \sec{\left(4 a - \frac{\pi}{2} \right)}}{\left(1 + \frac{\sec^{2}{\left(4 a - \frac{\pi}{2} \right)}}{\sec^{2}{\left(4 a \right)}}\right) \sec{\left(4 a \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \sec{\left(4 a - \frac{\pi}{2} \right)}}{\left(1 + \frac{\sec^{2}{\left(4 a - \frac{\pi}{2} \right)}}{\sec^{2}{\left(4 a \right)}}\right) \sec{\left(4 a \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2 \sec{\left(5 a - \frac{\pi}{2} \right)}}{\left(1 + \frac{\sec^{2}{\left(5 a - \frac{\pi}{2} \right)}}{\sec^{2}{\left(5 a \right)}}\right) \sec{\left(5 a \right)}} & \text{otherwise} \end{cases}\right)\right)$$
//                0                   for 6*a mod pi = 0\ //                0                   for 8*a mod pi = 0\   //                0                   for 8*a mod pi = 0\ //                0                   for 10*a mod pi = 0\
||                                                      | ||                                                      |   ||                                                      | ||                                                       |
||            2*cos(3*a)                                | ||            2*cos(4*a)                                |   ||            2*cos(4*a)                                | ||            2*cos(5*a)                                 |
||----------------------------------      otherwise     | ||----------------------------------      otherwise     |   ||----------------------------------      otherwise     | ||----------------------------------       otherwise     |
||/         2        \                                  | ||/         2        \                                  |   ||/         2        \                                  | ||/         2        \                                   |
|<|      cos (3*a)   |    /      pi\                    |*|<|      cos (4*a)   |    /      pi\                    | + |<|      cos (4*a)   |    /      pi\                    |*|<|      cos (5*a)   |    /      pi\                     |
|||1 + --------------|*cos|3*a - --|                    | |||1 + --------------|*cos|4*a - --|                    |   |||1 + --------------|*cos|4*a - --|                    | |||1 + --------------|*cos|5*a - --|                     |
|||       2/      pi\|    \      2 /                    | |||       2/      pi\|    \      2 /                    |   |||       2/      pi\|    \      2 /                    | |||       2/      pi\|    \      2 /                     |
|||    cos |3*a - --||                                  | |||    cos |4*a - --||                                  |   |||    cos |4*a - --||                                  | |||    cos |5*a - --||                                   |
||\        \      2 //                                  | ||\        \      2 //                                  |   ||\        \      2 //                                  | ||\        \      2 //                                   |
\\                                                      / \\                                                      /   \\                                                      / \\                                                       /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2 \cos{\left(3 a \right)}}{\left(\frac{\cos^{2}{\left(3 a \right)}}{\cos^{2}{\left(3 a - \frac{\pi}{2} \right)}} + 1\right) \cos{\left(3 a - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \cos{\left(4 a \right)}}{\left(\frac{\cos^{2}{\left(4 a \right)}}{\cos^{2}{\left(4 a - \frac{\pi}{2} \right)}} + 1\right) \cos{\left(4 a - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \cos{\left(4 a \right)}}{\left(\frac{\cos^{2}{\left(4 a \right)}}{\cos^{2}{\left(4 a - \frac{\pi}{2} \right)}} + 1\right) \cos{\left(4 a - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2 \cos{\left(5 a \right)}}{\left(\frac{\cos^{2}{\left(5 a \right)}}{\cos^{2}{\left(5 a - \frac{\pi}{2} \right)}} + 1\right) \cos{\left(5 a - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right)$$
//                0                   for 6*a mod pi = 0\ //                0                   for 8*a mod pi = 0\   //                0                   for 8*a mod pi = 0\ //                0                   for 10*a mod pi = 0\
||                                                      | ||                                                      |   ||                                                      | ||                                                       |
||            2*csc(3*a)                                | ||            2*csc(4*a)                                |   ||            2*csc(4*a)                                | ||            2*csc(5*a)                                 |
||----------------------------------      otherwise     | ||----------------------------------      otherwise     |   ||----------------------------------      otherwise     | ||----------------------------------       otherwise     |
||/         2        \                                  | ||/         2        \                                  |   ||/         2        \                                  | ||/         2        \                                   |
|<|      csc (3*a)   |    /pi      \                    |*|<|      csc (4*a)   |    /pi      \                    | + |<|      csc (4*a)   |    /pi      \                    |*|<|      csc (5*a)   |    /pi      \                     |
|||1 + --------------|*csc|-- - 3*a|                    | |||1 + --------------|*csc|-- - 4*a|                    |   |||1 + --------------|*csc|-- - 4*a|                    | |||1 + --------------|*csc|-- - 5*a|                     |
|||       2/pi      \|    \2       /                    | |||       2/pi      \|    \2       /                    |   |||       2/pi      \|    \2       /                    | |||       2/pi      \|    \2       /                     |
|||    csc |-- - 3*a||                                  | |||    csc |-- - 4*a||                                  |   |||    csc |-- - 4*a||                                  | |||    csc |-- - 5*a||                                   |
||\        \2       //                                  | ||\        \2       //                                  |   ||\        \2       //                                  | ||\        \2       //                                   |
\\                                                      / \\                                                      /   \\                                                      / \\                                                       /
$$\left(\left(\begin{cases} 0 & \text{for}\: 6 a \bmod \pi = 0 \\\frac{2 \csc{\left(3 a \right)}}{\left(\frac{\csc^{2}{\left(3 a \right)}}{\csc^{2}{\left(- 3 a + \frac{\pi}{2} \right)}} + 1\right) \csc{\left(- 3 a + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \csc{\left(4 a \right)}}{\left(\frac{\csc^{2}{\left(4 a \right)}}{\csc^{2}{\left(- 4 a + \frac{\pi}{2} \right)}} + 1\right) \csc{\left(- 4 a + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(\left(\begin{cases} 0 & \text{for}\: 8 a \bmod \pi = 0 \\\frac{2 \csc{\left(4 a \right)}}{\left(\frac{\csc^{2}{\left(4 a \right)}}{\csc^{2}{\left(- 4 a + \frac{\pi}{2} \right)}} + 1\right) \csc{\left(- 4 a + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right) \left(\begin{cases} 0 & \text{for}\: 10 a \bmod \pi = 0 \\\frac{2 \csc{\left(5 a \right)}}{\left(\frac{\csc^{2}{\left(5 a \right)}}{\csc^{2}{\left(- 5 a + \frac{\pi}{2} \right)}} + 1\right) \csc{\left(- 5 a + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right)$$
Piecewise((0, Mod(6*a = pi, 0)), (2*csc(3*a)/((1 + csc(3*a)^2/csc(pi/2 - 3*a)^2)*csc(pi/2 - 3*a)), True))*Piecewise((0, Mod(8*a = pi, 0)), (2*csc(4*a)/((1 + csc(4*a)^2/csc(pi/2 - 4*a)^2)*csc(pi/2 - 4*a)), True)) + Piecewise((0, Mod(8*a = pi, 0)), (2*csc(4*a)/((1 + csc(4*a)^2/csc(pi/2 - 4*a)^2)*csc(pi/2 - 4*a)), True))*Piecewise((0, Mod(10*a = pi, 0)), (2*csc(5*a)/((1 + csc(5*a)^2/csc(pi/2 - 5*a)^2)*csc(pi/2 - 5*a)), True))
Численный ответ [src]
sin(6*a)*sin(8*a) + sin(8*a)*sin(10*a)
sin(6*a)*sin(8*a) + sin(8*a)*sin(10*a)