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сумма
-acos(4/5) + 2*pi + acos(4/5)
=
2*pi
произведение
-acos(4/5) + 2*pi * acos(4/5)
=
(-acos(4/5) + 2*pi)*acos(4/5)
x_1 = -acos(4/5) + 2*pi
x_2 = acos(4/5)
x1 = 43.3387960414638
x2 = -99.8874638060801
x3 = 82.3249101021279
x4 = -93.6042784989005
x5 = -68.4715372701822
x6 = 55.905166655823
x7 = -37.0556107342842
x8 = 74.7547225773617
x9 = 25.7762423375116
x10 = -74.7547225773617
x11 = 32.0594276446912
x12 = -24.4892401199251
x13 = -82.3249101021279
x14 = -3210.06419085998
x15 = -76.0417247949483
x16 = -19.493057030332
x17 = -87.3210931917209
x18 = -5.6396841983863
x19 = 99.8874638060801
x20 = 81.0379078845413
x21 = -57.1921688734096
x22 = 87.3210931917209
x23 = 30.7724254271046
x24 = 37.0556107342842
x25 = 3550.64319966526
x26 = 93.6042784989005
x27 = 57.1921688734096
x28 = 68.4715372701822
x29 = 44.6257982590504
x30 = -62.1883519630026
x31 = 0.643501108793284
x32 = -11.9228695055659
x33 = -55.905166655823
x34 = -25.7762423375116
x35 = -12486222.9460819
x36 = -63.4753541805892
x37 = -18.2060548127455
x38 = -13.2098717231525
x39 = 62.1883519630026
x40 = -88.6080954093075
x41 = -0.643501108793284
x42 = 76.0417247949483
x43 = 19.493057030332
x44 = -44.6257982590504
x45 = -50.90898356623
x46 = 6.92668641597287
x47 = 69.7585394877687
x48 = -6.92668641597287
x49 = 24.4892401199251
x50 = 5.6396841983863
x51 = -30.7724254271046
x52 = -38.3426129518708
x53 = 50.90898356623
x54 = 11.9228695055659
x55 = 13.2098717231525
x56 = 88.6080954093075
x57 = -49.6219813486434
x58 = 49.6219813486434
x59 = -43.3387960414638
x60 = -101.174466023667
x61 = 18.2060548127455
x62 = 63.4753541805892
x63 = -81.0379078845413
x64 = 38.3426129518708
x65 = -69.7585394877687
x66 = 94.8912807164871
x67 = -32.0594276446912
x68 = -94.8912807164871
x68 = -94.8912807164871