cos(x) = cos(y)
sin(x) = 0
sin(x) = 0
0
0
3.14159265358979
3.14159265358979
x1 = 6.283185307179586 y1 = 6.283185307179586
x2 = -3.141592653589793 y2 = -3.141592653589793
x3 = -3.141592653589793 y3 = 3.141592653589793
x4 = -9.42477796076938 y4 = 9.42477796076938
x5 = -9.42477796076938 y5 = -9.42477796076938
x6 = -6.283185307179586 y6 = 6.283185307179586
x7 = 3.141592653589793 y7 = 3.141592653589793
x8 = -6.283185307179586 y8 = -6.283185307179586
x9 = 9.42477796076938 y9 = 9.42477796076938
x9 = 9.42477796076938 y9 = 9.42477796076938