θ=180+ω

Ο = Intersect(xAxis, yAxis)
Β = Point(yAxis)
c = Circle(Ο, Β)
Μ = Point(c)
f = Ray(Ο, Μ)
Δ = Point(xAxis)
g = Ray(Ο, Δ)
θ = Angle(Δ, Ο, Μ)
Γ = Point(c)
h = Ray(Ο, Γ)
β = Angle(Δ, Ο, Γ)
Α = Intersect(c, xAxis, 1)
ω = Angle(Α, Ο, Μ)