$ Koostas: Maario \; Lemmik $
$ 6.\; TJ : Siinus\;ja\;koosinus\;masin$

r_{1} = 2.5 (slider from -5 to 5)
a = 5 (slider from -5 to 5)
eq1: (x + a)^(2) + y^(2) = r_{1}^(2)
A = Center(eq1)
B = Point(eq1)
R = Segment(A, B)
f: y = 0
g = OrthogonalLine(B, f)
α = Angle(f, R)
C = Intersect(f, g)
h = Segment(B, C)
D: (α, y(B))
i = Segment(B, D)
j = OrthogonalLine(D, f)
E = Intersect(j, f)
k = Segment(D, E)
F = Point(yAxis)
l = Segment(F, E)
eq2: x = x(A)
siinusf = Segment(D, E)
G, H = Intersect(eq1, eq2)
m = Segment(G, A)
β = Angle(G, A, B)
I: (β, y(B))
n = OrthogonalLine(I, l)
J = Intersect(n, f)
koosinusf = Segment(I, J)