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4*cos(a)^2+4*sin(a)^2 если a=-4

Выражение, которое надо упростить:

Решение

Вы ввели [src]
     2           2   
4*cos (a) + 4*sin (a)
$$4 \sin^{2}{\left(a \right)} + 4 \cos^{2}{\left(a \right)}$$
4*cos(a)^2 + 4*sin(a)^2
Общее упрощение [src]
4
$$4$$
4
Численный ответ [src]
4.0*cos(a)^2 + 4.0*sin(a)^2
4.0*cos(a)^2 + 4.0*sin(a)^2
Объединение рациональных выражений [src]
  /   2         2   \
4*\cos (a) + sin (a)/
$$4 \left(\sin^{2}{\left(a \right)} + \cos^{2}{\left(a \right)}\right)$$
4*(cos(a)^2 + sin(a)^2)
Степени [src]
                                      2
                  2     / I*a    -I*a\ 
  /   -I*a    I*a\      |e      e    | 
- \- e     + e   /  + 4*|---- + -----| 
                        \ 2       2  / 
$$4 \left(\frac{e^{i a}}{2} + \frac{e^{- i a}}{2}\right)^{2} - \left(e^{i a} - e^{- i a}\right)^{2}$$
-(-exp(-i*a) + exp(i*a))^2 + 4*(exp(i*a)/2 + exp(-i*a)/2)^2
Собрать выражение [src]
4
$$4$$
4
Тригонометрическая часть [src]
4
$$4$$
     2           2/    pi\
4*sin (a) + 4*sin |a + --|
                  \    2 /
$$4 \sin^{2}{\left(a \right)} + 4 \sin^{2}{\left(a + \frac{\pi}{2} \right)}$$
   4         4   
------- + -------
   2         2   
csc (a)   sec (a)
$$\frac{4}{\sec^{2}{\left(a \right)}} + \frac{4}{\csc^{2}{\left(a \right)}}$$
     2           2/    pi\
4*cos (a) + 4*cos |a - --|
                  \    2 /
$$4 \cos^{2}{\left(a \right)} + 4 \cos^{2}{\left(a - \frac{\pi}{2} \right)}$$
   4           4      
------- + ------------
   2         2/    pi\
sec (a)   sec |a - --|
              \    2 /
$$\frac{4}{\sec^{2}{\left(a - \frac{\pi}{2} \right)}} + \frac{4}{\sec^{2}{\left(a \right)}}$$
   4           4      
------- + ------------
   2         2/pi    \
sec (a)   sec |-- - a|
              \2     /
$$\frac{4}{\sec^{2}{\left(- a + \frac{\pi}{2} \right)}} + \frac{4}{\sec^{2}{\left(a \right)}}$$
   4           4      
------- + ------------
   2         2/pi    \
csc (a)   csc |-- - a|
              \2     /
$$\frac{4}{\csc^{2}{\left(- a + \frac{\pi}{2} \right)}} + \frac{4}{\csc^{2}{\left(a \right)}}$$
     4              4      
------------ + ------------
   2              2/pi    \
csc (pi - a)   csc |-- - a|
                   \2     /
$$\frac{4}{\csc^{2}{\left(- a + \frac{\pi}{2} \right)}} + \frac{4}{\csc^{2}{\left(- a + \pi \right)}}$$
                              2             
10 - 8*cos(a) - 4*(1 - cos(a))  + 2*cos(2*a)
$$- 4 \left(- \cos{\left(a \right)} + 1\right)^{2} - 8 \cos{\left(a \right)} + 2 \cos{\left(2 a \right)} + 10$$
                                     2              
                   /       2/a   pi\\              2
2*(1 + cos(2*a)) + |1 - cot |- + --|| *(1 + sin(a)) 
                   \        \2   4 //               
$$\left(- \cot^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} + 1\right)^{2} \left(\sin{\left(a \right)} + 1\right)^{2} + 2 \left(\cos{\left(2 a \right)} + 1\right)$$
                           2/a   pi\  
                     16*tan |- + --|  
                            \2   4 /  
2*(1 - cos(2*a)) + -------------------
                                     2
                   /       2/a   pi\\ 
                   |1 + tan |- + --|| 
                   \        \2   4 // 
$$2 \cdot \left(- \cos{\left(2 a \right)} + 1\right) + \frac{16 \tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)}}{\left(\tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}}$$
               2                 
  /       2/a\\            2/a\  
4*|1 - tan |-||      16*tan |-|  
  \        \2//             \2/  
---------------- + --------------
              2                 2
 /       2/a\\     /       2/a\\ 
 |1 + tan |-||     |1 + tan |-|| 
 \        \2//     \        \2// 
$$\frac{4 \left(- \tan^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}}{\left(\tan^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} + \frac{16 \tan^{2}{\left(\frac{a}{2} \right)}}{\left(\tan^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}}$$
        2/a\             2/a   pi\  
  16*cot |-|       16*tan |- + --|  
         \2/              \2   4 /  
-------------- + -------------------
             2                     2
/       2/a\\    /       2/a   pi\\ 
|1 + cot |-||    |1 + tan |- + --|| 
\        \2//    \        \2   4 // 
$$\frac{16 \cot^{2}{\left(\frac{a}{2} \right)}}{\left(\cot^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} + \frac{16 \tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)}}{\left(\tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}}$$
        2/a\             2/a   pi\  
  16*tan |-|       16*tan |- + --|  
         \2/              \2   4 /  
-------------- + -------------------
             2                     2
/       2/a\\    /       2/a   pi\\ 
|1 + tan |-||    |1 + tan |- + --|| 
\        \2//    \        \2   4 // 
$$\frac{16 \tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)}}{\left(\tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}} + \frac{16 \tan^{2}{\left(\frac{a}{2} \right)}}{\left(\tan^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}}$$
               2                         
  /       1   \                          
4*|1 - -------|                          
  |       2/a\|                          
  |    cot |-||                          
  \        \2//              16          
---------------- + ----------------------
              2                 2        
 /       1   \     /       1   \     2/a\
 |1 + -------|     |1 + -------| *cot |-|
 |       2/a\|     |       2/a\|      \2/
 |    cot |-||     |    cot |-||         
 \        \2//     \        \2//         
$$\frac{4 \left(1 - \frac{1}{\cot^{2}{\left(\frac{a}{2} \right)}}\right)^{2}}{\left(1 + \frac{1}{\cot^{2}{\left(\frac{a}{2} \right)}}\right)^{2}} + \frac{16}{\left(1 + \frac{1}{\cot^{2}{\left(\frac{a}{2} \right)}}\right)^{2} \cot^{2}{\left(\frac{a}{2} \right)}}$$
  //   0     for a mod pi = 0\     //   1     for a mod 2*pi = 0\
  ||                         |     ||                           |
4*|<   2                     | + 4*|<   2                       |
  ||sin (a)     otherwise    |     ||cos (a)      otherwise     |
  \\                         /     \\                           /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\sin^{2}{\left(a \right)} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\cos^{2}{\left(a \right)} & \text{otherwise} \end{cases}\right)\right)$$
                2                        2
  /        2/a\\      /        2/a   pi\\ 
4*|-1 + cot |-||    4*|-1 + tan |- + --|| 
  \         \2//      \         \2   4 // 
----------------- + ----------------------
               2                       2  
  /       2/a\\      /       2/a   pi\\   
  |1 + cot |-||      |1 + tan |- + --||   
  \        \2//      \        \2   4 //   
$$\frac{4 \left(\tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} - 1\right)^{2}}{\left(\tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}} + \frac{4 \left(\cot^{2}{\left(\frac{a}{2} \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}}$$
                    2                  2
  /       2/a   pi\\      /       2/a\\ 
4*|1 - cot |- + --||    4*|1 - tan |-|| 
  \        \2   4 //      \        \2// 
--------------------- + ----------------
                   2                  2 
 /       2/a   pi\\      /       2/a\\  
 |1 + cot |- + --||      |1 + tan |-||  
 \        \2   4 //      \        \2//  
$$\frac{4 \left(- \tan^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}}{\left(\tan^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} + \frac{4 \left(- \cot^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}}{\left(\cot^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}}$$
  //   0     for a mod pi = 0\     //     1        for a mod 2*pi = 0\
  ||                         |     ||                                |
4*|<   2                     | + 4*|<   2/    pi\                    |
  ||sin (a)     otherwise    |     ||sin |a + --|      otherwise     |
  \\                         /     \\    \    2 /                    /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\sin^{2}{\left(a \right)} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\sin^{2}{\left(a + \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}\right)\right)$$
  //     0        for a mod pi = 0\     //   1     for a mod 2*pi = 0\
  ||                              |     ||                           |
4*|<   2/    pi\                  | + 4*|<   2                       |
  ||cos |a - --|     otherwise    |     ||cos (a)      otherwise     |
  \\    \    2 /                  /     \\                           /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\cos^{2}{\left(a - \frac{\pi}{2} \right)} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\cos^{2}{\left(a \right)} & \text{otherwise} \end{cases}\right)\right)$$
  //     0        for a mod pi = 0\     //   1     for a mod 2*pi = 0\
  ||                              |     ||                           |
  ||     1                        |     ||   1                       |
4*|<------------     otherwise    | + 4*|<-------      otherwise     |
  ||   2/    pi\                  |     ||   2                       |
  ||sec |a - --|                  |     ||sec (a)                    |
  \\    \    2 /                  /     \\                           /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{1}{\sec^{2}{\left(a - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{1}{\sec^{2}{\left(a \right)}} & \text{otherwise} \end{cases}\right)\right)$$
  //   0     for a mod pi = 0\     //     1        for a mod 2*pi = 0\
  ||                         |     ||                                |
  ||   1                     |     ||     1                          |
4*|<-------     otherwise    | + 4*|<------------      otherwise     |
  ||   2                     |     ||   2/pi    \                    |
  ||csc (a)                  |     ||csc |-- - a|                    |
  \\                         /     \\    \2     /                    /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{1}{\csc^{2}{\left(a \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{1}{\csc^{2}{\left(- a + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right)$$
                                     //                             /    3*pi\             \
  //   1     for a mod 2*pi = 0\     ||           1             for |a + ----| mod 2*pi = 0|
  ||                           |     ||                             \     2  /             |
4*|<   2                       | + 4*|<                                                    |
  ||cos (a)      otherwise     |     ||       4/a\        2/a\                             |
  \\                           /     ||- 4*cos |-| + 4*cos |-|           otherwise         |
                                     \\        \2/         \2/                             /
$$\left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\cos^{2}{\left(a \right)} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: \left(a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\- 4 \cos^{4}{\left(\frac{a}{2} \right)} + 4 \cos^{2}{\left(\frac{a}{2} \right)} & \text{otherwise} \end{cases}\right)\right)$$
                 2                           
  /         4/a\\                            
  |    4*sin |-||                            
  |          \2/|                            
4*|1 - ---------|                 4/a\       
  |        2    |           64*sin |-|       
  \     sin (a) /                  \2/       
------------------ + ------------------------
                2                   2        
 /         4/a\\     /         4/a\\         
 |    4*sin |-||     |    4*sin |-||         
 |          \2/|     |          \2/|     2   
 |1 + ---------|     |1 + ---------| *sin (a)
 |        2    |     |        2    |         
 \     sin (a) /     \     sin (a) /         
$$\frac{4 \left(- \frac{4 \sin^{4}{\left(\frac{a}{2} \right)}}{\sin^{2}{\left(a \right)}} + 1\right)^{2}}{\left(\frac{4 \sin^{4}{\left(\frac{a}{2} \right)}}{\sin^{2}{\left(a \right)}} + 1\right)^{2}} + \frac{64 \sin^{4}{\left(\frac{a}{2} \right)}}{\left(\frac{4 \sin^{4}{\left(\frac{a}{2} \right)}}{\sin^{2}{\left(a \right)}} + 1\right)^{2} \sin^{2}{\left(a \right)}}$$
                                   //                                /    pi\           \
  //   0     for a mod pi = 0\     ||            0               for |a + --| mod pi = 0|
  ||                         |     ||                                \    2 /           |
4*|<   2                     | + 4*|<                                                   |
  ||sin (a)     otherwise    |     ||            2    2/a   pi\                         |
  \\                         /     ||(1 + sin(a)) *cot |- + --|         otherwise       |
                                   \\                  \2   4 /                         /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\sin^{2}{\left(a \right)} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 0 & \text{for}\: \left(a + \frac{\pi}{2}\right) \bmod \pi = 0 \\\left(\sin{\left(a \right)} + 1\right)^{2} \cot^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} & \text{otherwise} \end{cases}\right)\right)$$
  //            0               for a mod pi = 0\     //             1                for a mod 2*pi = 0\
  ||                                            |     ||                                                |
  ||/   0     for a mod pi = 0                  |     ||/   1     for a mod 2*pi = 0                    |
4*|<|                                           | + 4*|<|                                               |
  ||<   2                          otherwise    |     ||<   2                             otherwise     |
  |||sin (a)     otherwise                      |     |||cos (a)      otherwise                         |
  \\\                                           /     \\\                                               /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\sin^{2}{\left(a \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\cos^{2}{\left(a \right)} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)\right)$$
  //      0         for a mod pi = 0\     //       1         for a mod 2*pi = 0\
  ||                                |     ||                                   |
  ||       2/a\                     |     ||              2                    |
  ||  4*cot |-|                     |     ||/        2/a\\                     |
  ||        \2/                     |     |||-1 + cot |-||                     |
4*|<--------------     otherwise    | + 4*|<\         \2//                     |
  ||             2                  |     ||---------------      otherwise     |
  ||/       2/a\\                   |     ||              2                    |
  |||1 + cot |-||                   |     || /       2/a\\                     |
  ||\        \2//                   |     || |1 + cot |-||                     |
  \\                                /     \\ \        \2//                     /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{4 \cot^{2}{\left(\frac{a}{2} \right)}}{\left(\cot^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(\cot^{2}{\left(\frac{a}{2} \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
  //      0         for a mod pi = 0\     //      1         for a mod 2*pi = 0\
  ||                                |     ||                                  |
  ||       2/a\                     |     ||             2                    |
  ||  4*tan |-|                     |     ||/       2/a\\                     |
  ||        \2/                     |     |||1 - tan |-||                     |
4*|<--------------     otherwise    | + 4*|<\        \2//                     |
  ||             2                  |     ||--------------      otherwise     |
  ||/       2/a\\                   |     ||             2                    |
  |||1 + tan |-||                   |     ||/       2/a\\                     |
  ||\        \2//                   |     |||1 + tan |-||                     |
  \\                                /     \\\        \2//                     /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{4 \tan^{2}{\left(\frac{a}{2} \right)}}{\left(\tan^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(- \tan^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}}{\left(\tan^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
                    2                              
  /       2/a   pi\\                               
  |    cos |- - --||                               
  |        \2   2 /|                               
4*|1 - ------------|                               
  |         2/a\   |                2/a   pi\      
  |      cos |-|   |          16*cos |- - --|      
  \          \2/   /                 \2   2 /      
--------------------- + ---------------------------
                   2                      2        
 /       2/a   pi\\     /       2/a   pi\\         
 |    cos |- - --||     |    cos |- - --||         
 |        \2   2 /|     |        \2   2 /|     2/a\
 |1 + ------------|     |1 + ------------| *cos |-|
 |         2/a\   |     |         2/a\   |      \2/
 |      cos |-|   |     |      cos |-|   |         
 \          \2/   /     \          \2/   /         
$$\frac{4 \left(1 - \frac{\cos^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{a}{2} \right)}}\right)^{2}}{\left(1 + \frac{\cos^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{a}{2} \right)}}\right)^{2}} + \frac{16 \cos^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}}{\left(1 + \frac{\cos^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}}{\cos^{2}{\left(\frac{a}{2} \right)}}\right)^{2} \cos^{2}{\left(\frac{a}{2} \right)}}$$
                    2                                   
  /         2/a\   \                                    
  |      sec |-|   |                                    
  |          \2/   |                                    
4*|1 - ------------|                                    
  |       2/a   pi\|                     2/a\           
  |    sec |- - --||               16*sec |-|           
  \        \2   2 //                      \2/           
--------------------- + --------------------------------
                   2                      2             
 /         2/a\   \     /         2/a\   \              
 |      sec |-|   |     |      sec |-|   |              
 |          \2/   |     |          \2/   |     2/a   pi\
 |1 + ------------|     |1 + ------------| *sec |- - --|
 |       2/a   pi\|     |       2/a   pi\|      \2   2 /
 |    sec |- - --||     |    sec |- - --||              
 \        \2   2 //     \        \2   2 //              
$$\frac{4 \left(- \frac{\sec^{2}{\left(\frac{a}{2} \right)}}{\sec^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}} + 1\right)^{2}}{\left(\frac{\sec^{2}{\left(\frac{a}{2} \right)}}{\sec^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}} + 1\right)^{2}} + \frac{16 \sec^{2}{\left(\frac{a}{2} \right)}}{\left(\frac{\sec^{2}{\left(\frac{a}{2} \right)}}{\sec^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}} + 1\right)^{2} \sec^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}}$$
                    2                              
  /       2/pi   a\\                               
  |    csc |-- - -||                               
  |        \2    2/|                               
4*|1 - ------------|                               
  |         2/a\   |                2/pi   a\      
  |      csc |-|   |          16*csc |-- - -|      
  \          \2/   /                 \2    2/      
--------------------- + ---------------------------
                   2                      2        
 /       2/pi   a\\     /       2/pi   a\\         
 |    csc |-- - -||     |    csc |-- - -||         
 |        \2    2/|     |        \2    2/|     2/a\
 |1 + ------------|     |1 + ------------| *csc |-|
 |         2/a\   |     |         2/a\   |      \2/
 |      csc |-|   |     |      csc |-|   |         
 \          \2/   /     \          \2/   /         
$$\frac{4 \left(1 - \frac{\csc^{2}{\left(- \frac{a}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{a}{2} \right)}}\right)^{2}}{\left(1 + \frac{\csc^{2}{\left(- \frac{a}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{a}{2} \right)}}\right)^{2}} + \frac{16 \csc^{2}{\left(- \frac{a}{2} + \frac{\pi}{2} \right)}}{\left(1 + \frac{\csc^{2}{\left(- \frac{a}{2} + \frac{\pi}{2} \right)}}{\csc^{2}{\left(\frac{a}{2} \right)}}\right)^{2} \csc^{2}{\left(\frac{a}{2} \right)}}$$
                                                  //       1         for a mod 2*pi = 0\
                                                  ||                                   |
  //          0             for a mod pi = 0\     ||              2                    |
  ||                                        |     ||/        1   \                     |
  ||          4                             |     |||-1 + -------|                     |
  ||----------------------     otherwise    |     |||        2/a\|                     |
  ||             2                          |     |||     tan |-||                     |
4*|
            
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{4}{\left(1 + \frac{1}{\tan^{2}{\left(\frac{a}{2} \right)}}\right)^{2} \tan^{2}{\left(\frac{a}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(-1 + \frac{1}{\tan^{2}{\left(\frac{a}{2} \right)}}\right)^{2}}{\left(1 + \frac{1}{\tan^{2}{\left(\frac{a}{2} \right)}}\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
                                          //                         /    pi\           \
  //      0         for a mod pi = 0\     ||         0           for |a + --| mod pi = 0|
  ||                                |     ||                         \    2 /           |
  ||       2/a\                     |     ||                                            |
  ||  4*cot |-|                     |     ||        2/a   pi\                           |
  ||        \2/                     |     ||   4*cot |- + --|                           |
4*|<--------------     otherwise    | + 4*|<         \2   4 /                           |
  ||             2                  |     ||-------------------         otherwise       |
  ||/       2/a\\                   |     ||                  2                         |
  |||1 + cot |-||                   |     ||/       2/a   pi\\                          |
  ||\        \2//                   |     |||1 + cot |- + --||                          |
  \\                                /     ||\        \2   4 //                          |
                                          \\                                            /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{4 \cot^{2}{\left(\frac{a}{2} \right)}}{\left(\cot^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 0 & \text{for}\: \left(a + \frac{\pi}{2}\right) \bmod \pi = 0 \\\frac{4 \cot^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)}}{\left(\cot^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
                                             //                          /    3*pi\             \
  //       1         for a mod 2*pi = 0\     ||         1            for |a + ----| mod 2*pi = 0|
  ||                                   |     ||                          \     2  /             |
  ||              2                    |     ||                                                 |
  ||/        2/a\\                     |     ||                   2                             |
  |||-1 + cot |-||                     |     ||/        2/a   pi\\                              |
4*|<\         \2//                     | + 4*|<|-1 + tan |- + --||                              |
  ||---------------      otherwise     |     ||\         \2   4 //                              |
  ||              2                    |     ||--------------------           otherwise         |
  || /       2/a\\                     |     ||                  2                              |
  || |1 + cot |-||                     |     ||/       2/a   pi\\                               |
  \\ \        \2//                     /     |||1 + tan |- + --||                               |
                                             \\\        \2   4 //                               /
$$\left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(\cot^{2}{\left(\frac{a}{2} \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: \left(a + \frac{3 \pi}{2}\right) \bmod 2 \pi = 0 \\\frac{\left(\tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} - 1\right)^{2}}{\left(\tan^{2}{\left(\frac{a}{2} + \frac{\pi}{4} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
  //           0              for a mod pi = 0\                                                  
  ||                                          |     //          1             for a mod 2*pi = 0\
  ||           2                              |     ||                                          |
  ||        sin (a)                           |     ||                     2                    |
  ||------------------------     otherwise    |     ||/   2           4/a\\                     |
  ||               2                          |     |||sin (a) - 4*sin |-||                     |
4*|
            
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{\sin^{2}{\left(a \right)}}{\left(1 + \frac{\sin^{2}{\left(a \right)}}{4 \sin^{4}{\left(\frac{a}{2} \right)}}\right)^{2} \sin^{4}{\left(\frac{a}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(- 4 \sin^{4}{\left(\frac{a}{2} \right)} + \sin^{2}{\left(a \right)}\right)^{2}}{\left(4 \sin^{4}{\left(\frac{a}{2} \right)} + \sin^{2}{\left(a \right)}\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
                                                    //        1          for a mod 2*pi = 0\
                                                    ||                                     |
  //           0              for a mod pi = 0\     ||                2                    |
  ||                                          |     ||/         2    \                     |
  ||           2                              |     |||      sin (a) |                     |
  ||        sin (a)                           |     |||-1 + ---------|                     |
  ||------------------------     otherwise    |     |||          4/a\|                     |
  ||               2                          |     |||     4*sin |-||                     |
4*|
            
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{\sin^{2}{\left(a \right)}}{\left(1 + \frac{\sin^{2}{\left(a \right)}}{4 \sin^{4}{\left(\frac{a}{2} \right)}}\right)^{2} \sin^{4}{\left(\frac{a}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(-1 + \frac{\sin^{2}{\left(a \right)}}{4 \sin^{4}{\left(\frac{a}{2} \right)}}\right)^{2}}{\left(1 + \frac{\sin^{2}{\left(a \right)}}{4 \sin^{4}{\left(\frac{a}{2} \right)}}\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
  //                0                  for a mod pi = 0\     //                 1                    for a mod 2*pi = 0\
  ||                                                   |     ||                                                        |
  ||/      0         for a mod pi = 0                  |     ||/       1         for a mod 2*pi = 0                    |
  |||                                                  |     |||                                                       |
  |||       2/a\                                       |     |||              2                                        |
  |||  4*cot |-|                                       |     |||/        2/a\\                                         |
4*|<|        \2/                                       | + 4*|<||-1 + cot |-||                                         |
  ||<--------------     otherwise         otherwise    |     ||<\         \2//                           otherwise     |
  |||             2                                    |     |||---------------      otherwise                         |
  |||/       2/a\\                                     |     |||              2                                        |
  ||||1 + cot |-||                                     |     ||| /       2/a\\                                         |
  |||\        \2//                                     |     ||| |1 + cot |-||                                         |
  \\\                                                  /     \\\ \        \2//                                         /
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{4 \cot^{2}{\left(\frac{a}{2} \right)}}{\left(\cot^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(\cot^{2}{\left(\frac{a}{2} \right)} - 1\right)^{2}}{\left(\cot^{2}{\left(\frac{a}{2} \right)} + 1\right)^{2}} & \text{otherwise} \end{cases} & \text{otherwise} \end{cases}\right)\right)$$
                                                            //         1            for a mod 2*pi = 0\
                                                            ||                                        |
  //               0                  for a mod pi = 0\     ||                   2                    |
  ||                                                  |     ||/          2/a\   \                     |
  ||                2/a\                              |     |||       cos |-|   |                     |
  ||           4*cos |-|                              |     |||           \2/   |                     |
  ||                 \2/                              |     |||-1 + ------------|                     |
  ||--------------------------------     otherwise    |     |||        2/a   pi\|                     |
  ||                  2                               |     |||     cos |- - --||                     |
4*|
            
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{4 \cos^{2}{\left(\frac{a}{2} \right)}}{\left(\frac{\cos^{2}{\left(\frac{a}{2} \right)}}{\cos^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}} + 1\right)^{2} \cos^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(\frac{\cos^{2}{\left(\frac{a}{2} \right)}}{\cos^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}} - 1\right)^{2}}{\left(\frac{\cos^{2}{\left(\frac{a}{2} \right)}}{\cos^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
                                                       //         1            for a mod 2*pi = 0\
                                                       ||                                        |
  //             0               for a mod pi = 0\     ||                   2                    |
  ||                                             |     ||/        2/a   pi\\                     |
  ||            2/a   pi\                        |     |||     sec |- - --||                     |
  ||       4*sec |- - --|                        |     |||         \2   2 /|                     |
  ||             \2   2 /                        |     |||-1 + ------------|                     |
  ||---------------------------     otherwise    |     |||          2/a\   |                     |
  ||                  2                          |     |||       sec |-|   |                     |
4*|
            
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{4 \sec^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}}{\left(1 + \frac{\sec^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}}{\sec^{2}{\left(\frac{a}{2} \right)}}\right)^{2} \sec^{2}{\left(\frac{a}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(-1 + \frac{\sec^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}}{\sec^{2}{\left(\frac{a}{2} \right)}}\right)^{2}}{\left(1 + \frac{\sec^{2}{\left(\frac{a}{2} - \frac{\pi}{2} \right)}}{\sec^{2}{\left(\frac{a}{2} \right)}}\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
                                                            //         1            for a mod 2*pi = 0\
                                                            ||                                        |
  //               0                  for a mod pi = 0\     ||                   2                    |
  ||                                                  |     ||/          2/a\   \                     |
  ||                2/a\                              |     |||       csc |-|   |                     |
  ||           4*csc |-|                              |     |||           \2/   |                     |
  ||                 \2/                              |     |||-1 + ------------|                     |
  ||--------------------------------     otherwise    |     |||        2/pi   a\|                     |
  ||                  2                               |     |||     csc |-- - -||                     |
4*|
            
$$\left(4 \left(\begin{cases} 0 & \text{for}\: a \bmod \pi = 0 \\\frac{4 \csc^{2}{\left(\frac{a}{2} \right)}}{\left(\frac{\csc^{2}{\left(\frac{a}{2} \right)}}{\csc^{2}{\left(- \frac{a}{2} + \frac{\pi}{2} \right)}} + 1\right)^{2} \csc^{2}{\left(- \frac{a}{2} + \frac{\pi}{2} \right)}} & \text{otherwise} \end{cases}\right)\right) + \left(4 \left(\begin{cases} 1 & \text{for}\: a \bmod 2 \pi = 0 \\\frac{\left(\frac{\csc^{2}{\left(\frac{a}{2} \right)}}{\csc^{2}{\left(- \frac{a}{2} + \frac{\pi}{2} \right)}} - 1\right)^{2}}{\left(\frac{\csc^{2}{\left(\frac{a}{2} \right)}}{\csc^{2}{\left(- \frac{a}{2} + \frac{\pi}{2} \right)}} + 1\right)^{2}} & \text{otherwise} \end{cases}\right)\right)$$
4*Piecewise((0, Mod(a = pi, 0)), (4*csc(a/2)^2/((1 + csc(a/2)^2/csc(pi/2 - a/2)^2)^2*csc(pi/2 - a/2)^2), True)) + 4*Piecewise((1, Mod(a = 2*pi, 0)), ((-1 + csc(a/2)^2/csc(pi/2 - a/2)^2)^2/(1 + csc(a/2)^2/csc(pi/2 - a/2)^2)^2, True))