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сумма
-acos(7/10) + 2*pi + acos(7/10)
=
2*pi
произведение
-acos(7/10) + 2*pi * acos(7/10)
=
(-acos(7/10) + 2*pi)*acos(7/10)
x_1 = -acos(7/10) + 2*pi
x_2 = acos(7/10)
x1 = 18.0541570913546
x2 = -32.2113253660821
x3 = -74.6028248559709
x4 = 36.9037130128934
x5 = 5.48778647699544
x6 = 25.9281400589025
x7 = -25.9281400589025
x8 = -57.3440665948004
x9 = -87.1691954703301
x10 = 88.7599931306983
x11 = 49.4700836272525
x12 = -93.4523807775097
x13 = -7.07858413736373
x14 = 32.2113253660821
x15 = -49.4700836272525
x16 = -1967.43239997739
x17 = 69.9104372091596
x18 = 68.3196395487913
x19 = -5.48778647699544
x20 = -68.3196395487913
x21 = -80.8860101631505
x22 = -2424.51412974114
x23 = -11.770971784175
x24 = 7088.22842532876
x25 = 0.795398830184144
x26 = -36.9037130128934
x27 = -76.1936225163392
x28 = -69.9104372091596
x29 = -51.0608812876208
x30 = -99.7355660846892
x31 = 57.3440665948004
x32 = 76.1936225163392
x33 = 63.62725190198
x34 = 7.07858413736373
x35 = -95.0431784378779
x36 = 74.6028248559709
x37 = -19.6449547517229
x38 = -82.4768078235188
x39 = 93.4523807775097
x40 = -0.795398830184144
x41 = 87.1691954703301
x42 = -18.0541570913546
x43 = 30.6205277057138
x44 = -38.4945106732617
x45 = 55.7532689344321
x46 = -13.3617694445433
x47 = 24.3373423985342
x48 = 99.7355660846892
x49 = 19.6449547517229
x50 = -43.186898320073
x51 = -63.62725190198
x52 = -88.7599931306983
x53 = 62.0364542416117
x54 = 80.8860101631505
x55 = 82.4768078235188
x56 = 11.770971784175
x57 = -62.0364542416117
x58 = -55.7532689344321
x59 = 44.7776959804413
x60 = -44.7776959804413
x61 = 43.186898320073
x62 = 95.0431784378779
x63 = -101.326363745058
x64 = -30.6205277057138
x65 = 13.3617694445433
x66 = 38.4945106732617
x67 = 51.0608812876208
x68 = -24.3373423985342
x68 = -24.3373423985342