v

v

r(\theta)=a \tan{\theta} 

\eta=\overline{OQ}\
a=\eta\cdot\cos{\theta}\
v=\overline{QA}=a\cdot\tan{\theta}\
r=\eta-v=\frac{a}{\cos{\theta}}-a\cdot \tan{\theta}

A = Point(xAxis)
f = OrthogonalLine(A, xAxis)
Q = Point(f)
c = Circle(Q, A)
O: (0, 0)
g = Line(O, Q)
P, P' = Intersect(c, g)
Ortslinie1 = Locus(P, Q)
Ortslinie2 = Locus(P', Q)
B = Point(xAxis)
θ = Angle(B, O, Q)
v_{1} = Segment(Q, A)
v = Segment(Q, P)
j = Segment(Q, P')
a = Segment(O, A)
h = Segment(Q, A)
r = Segment(O, P)