durée

Angle

A = (2.3299601515402917, 7.826108850120259)
B = (8.632223273723529, 6.306659111073341)
C = (2.658023163379967, 1.903708162698751)
c = Circle(A, B, C)
D = Center(c)
E = (3.424377575863559, 4.240882645069162)
r = Segment(D, A)
F = (6.802375090794629, 4.209323715090767)
a = Line(D, xAxis)
b = Line(E, a)
G, H = Intersect(c, b)
e = Segment(H, G)
d = Circle(D, e / 2.0)
f = OrthogonalLine(E, a)
g = OrthogonalLine(F, a)
I, J = Intersect(d, f)
K, L = Intersect(d, g)
ecart = Angle(I, D, K)
M, N = Intersect(c, a)
latitude = Angle(M, D, G)
A2 = Angle(I, D, K)
B2 = 4
A3 = 6.283185307179586 rad (slider from 0 to 6.283185307179586, step 0.017453292519943295)
B3: A3 * B2 / A2