A = Point(xAxis)
O = Intersect(xAxis, yAxis)
a = Ray(O, A)
α = 1.064650843716541 rad (slider from 0 to 6.283185307179586, step 0.017453292519943295)
A' = Rotate(A, α, O)
β = Angle(A, O, A')
b = Ray(O, A')
B = Point(xAxis)
B' = Rotate(B, 3.0 * α, A)
γ = Angle(B, A, B')
c = Ray(A, B')
C = Intersect(c, b)