A = Intersect(xAxis, yAxis)
c = Circle(A, 1)
B = Point(c)
a = OrthogonalLine(B, xAxis)
b = OrthogonalLine(B, yAxis)
C = Intersect(a, xAxis)
D = Intersect(b, yAxis)
d = Segment(B, C)
e = Segment(B, D)
f = Segment(A, B)
v = Angle(xAxis, f)
Sinus: sin(v)
Cosinus: cos(v)