θ

Δ = 3/2 λ

θ

B = (2, 5)
D = Point(xAxis)
g = OrthogonalLine(D, xAxis)
A = (-2, 5)
a = Segment(A, B)
G = Intersect(g, a)
t = Ray(G, D)
C = Intersect(yAxis, a)
p = Circle(D, 1.0)
b = OrthogonalLine(C, a)
f = -0.4 (slider from -5 to 3, step 0.1)
P: (-(1.42), f)
c = Ray(A, P)
d = Ray(B, P)
e = OrthogonalLine(P, b)
P' = Intersect(b, e)
h = Segment(P, P')
i = OrthogonalLine(A, d)
E = Intersect(d, i)
j = Segment(A, E)
k = Segment(E, B)
α = Angle(B, E, A)
β = Angle(E, A, B)