θ

2a \pi

Ha 2016

a = 0.16
r(x) = (a * x)
c: r((2 * π))
ende = 22.7
b = CurveCartesian((r(t) * cos(t)), (r(t) * sin(t)), t, 0, ende)
O: (0, 0)
N: (π, 0)
θ = 8.2 (slider from -5 to 20, step 0.3)
N' = Rotate(N, θ, O)
α = Angle(N, O, N')
d = Ray(O, N')
A = (-3.36, 2.96)
B = Point(Circle[A, ((2 * a) * π)])
e = Segment(A, B)
C, D, E, F, G, H, I, J, C_1 = Intersect(d, b)
f = Segment(J, H)
g = Segment(F, D)
h = Segment(G, I)