Bildwechsel

a = false
A = (0.5, 6.6000000000000005)
B = (3.12, 0.74)
C = (9.02, 2.2800000000000002)
c = Circle(A, B, C)
D = (4.84, 6.82)
E = (6.16, 6.82)
b = Line(D, xAxis)
F, G = Intersect(c, b)
d = Distance(F, G)
M = Center(c)
Δx: x(E) - x(D)
Δt = 30
u: 3.141592653589793 * d
r = Radius(c)
T: u * Δt / (Δx * 24.0)
Δy: y(D) - y(M)
φ: asin(Δy / r) * 180.0 / 3.141592653589793