O = (0.14, -0.06)
P = (2.9, -0.08)
a = Ray(O, P)
P'_1 = (2.98, 2.34)
b = Ray(O, P'_1)
α = Angle(P, O, P'_1)
c = Circle(O, P)
P' = Intersect(c, b, 1)