Найду корень уравнения: tg(p/5)
с изменением знака при 0
p1 = 15.707963267949
p2 = 0.0
p3 = 78.5398163397448
p4 = -31.4159265358979
p5 = -78.5398163397448
p6 = 47.1238898038469
p7 = -62.8318530717959
p8 = -47.1238898038469
p9 = -94.2477796076938
p10 = 31.4159265358979
p11 = 94.2477796076938
p12 = 62.8318530717959
p13 = -15.707963267949