r cos(α)

r tan(α)

Sinus

Kosinus

Tangens

r sin(α)

O = Intersect(xAxis, yAxis)
c_1 = Circle(O, 1)
P = Point(c_1)
B = Intersect(c_1, xAxis, 2)
α = Angle(B, O, P)
r = Segment(O, P)
g = OrthogonalLine(P, xAxis)
h = OrthogonalLine(P, yAxis)
A = Intersect(h, yAxis)
C: (α, cos(α))
co = Segment(A, P)
f = OrthogonalLine(B, xAxis)
i = Ray(O, P)
Ta = Intersect(f, i)
ta = Segment(B, Ta)
s(x) = sin(x)
c(x) = cos(x)
t(x) = tan(x)
S: (α, sin(α))
T: (α, tan(α))
D = Intersect(g, xAxis)
si = Segment(P, D)