α+β

u*z

A=(cosα, senα)

Z=(|z|cosβ, |z|sinβ)

Z'=(|z|cos(α+β), |z|sin(α+β))

O = Intersect(xAxis, yAxis)
c = Circle(O, 1)
A = Point(c)
D = Point(xAxis)
u = Vector(O, A)
E = (0, 0)
α = Angle(D, E, A)
F = Point(xAxis)
C = Point(yAxis)
B = (-1.7874074074074073, 1.8424691358024696)
z = Vector(O, B)
G = Intersect(c, xAxis, 2)
β = Angle(G, O, B)
B' = Rotate(B, α, O)
w = Vector(O, B')
γ = Angle(G, O, B')