A = (-1.5, 0)
r = 1
180°: A - (r, 0.0)
90°: A + (0.0, r)
270°: A - (0.0, r)
g = Segment(270°, 90°)
c = Circle(A, r)
0°: A + (1.0, 0.0)
h = Segment(180°, 0°)
P = Point(c)
α = Angle(0°, A, P)
a = Segment(A, P)
b = Segment(A, 0°)
d = OrthogonalLine(P, b)
D = Intersect(d, b)
sin(α) = Segment(P, D)
cos(α) = Segment(A, D)
Text1: "sin(α) = " + (sin(α))
Text2: "cos(α) = " + (cos(α))