o: (0, 0, 0)
a = 1.4486232791552935 (slider from 0 to 360°, step 1°)
b = 0.518362787842316 (slider from -90° to 90°, step 0.1°)
A: (1; a; 0)
c = 0.5061454830783556 (slider from -180° to 180°, step 1°)
d = 0 (slider from 0 to 90°, step 1°)
B: (1; a + c; 0)
C = Point(xAxis)
D = Point(xAxis)
f = Line(C, D)
u = Vector(A)
v = Vector(B)
A': (1; a; b)
B': (1; a + c; b + d)
w = Vector(A')
e = Vector(B')
β = Angle(w, e)
α = Angle(u, v)
g = Segment(B', A')
h = Segment(A, B)
i: β / α
j: g / h