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сумма
-acos(-3/10) + 2*pi + acos(-3/10)
=
2*pi
произведение
-acos(-3/10) + 2*pi * acos(-3/10)
=
(-acos(-3/10) + 2*pi)*acos(-3/10)
x_1 = -acos(-3/10) + 2*pi
x_2 = acos(-3/10)
x1 = 45.8577861310674
x2 = -67.2395493981652
x3 = -96.1232685885041
x4 = 83.5568979741449
x5 = 39.5746008238878
x6 = 4.40769632636929
x7 = -4.40769632636929
x8 = -20.7250449023491
x9 = -35.8236228622672
x10 = -29.5404375550876
x11 = 64.7073420526062
x12 = 35.8236228622672
x13 = 73.5227347053447
x14 = 10.6908816335489
x15 = 284.618827803892
x16 = 16.9740669407285
x17 = 96.1232685885041
x18 = 14.4418595951695
x19 = 77.2737126669653
x20 = 60.9563640909856
x21 = -64.7073420526062
x22 = -73.5227347053447
x23 = 79.8059200125243
x24 = 8.15867428798988
x25 = 58.4241567454266
x26 = -16.9740669407285
x27 = -10.6908816335489
x28 = 92.3722906268835
x29 = 23.2572522479081
x30 = 98.6554759340631
x31 = -79.8059200125243
x32 = -48.3899934766264
x33 = 27.0082302095286
x34 = 54.673178783806
x35 = 42.1068081694468
x36 = -86.0891053197039
x37 = 48.3899934766264
x38 = -70.9905273597857
x39 = -54.673178783806
x40 = -89.8400832813245
x41 = 89.8400832813245
x42 = -23.2572522479081
x43 = -33.2914155167082
x44 = -60.9563640909856
x45 = 67.2395493981652
x46 = 20.7250449023491
x47 = -142.63777308432
x48 = 52.140971438247
x49 = -8.15867428798988
x50 = -1.87548898081029
x51 = -14.4418595951695
x52 = -42.1068081694468
x53 = -98.6554759340631
x54 = -45.8577861310674
x55 = -92.3722906268835
x56 = 70.9905273597857
x57 = -27.0082302095286
x58 = -52.140971438247
x59 = 1.87548898081029
x60 = -83.5568979741449
x61 = 29.5404375550876
x62 = -39.5746008238878
x63 = 33.2914155167082
x64 = -58.4241567454266
x65 = 86.0891053197039
x66 = -77.2737126669653
x66 = -77.2737126669653