c = 0 (slider from 0 to 5, step 0.25)
s = 2 (slider from 0 to 3, step 0.1)
r(x) = sqrt((c^(2) * cos(x)^(2)) + (s^(2) * sin(x)^(2)))
θ = 2.6 (slider from 0 to 7, step 0.1)
K: (θ, r(θ))
a = CurveCartesian((r(t) * cos(t)), (r(t) * sin(t)), t, 0, (2 * π))
P: (r(θ); θ)
f(x) = sqrt((c^(2) * cos(x)^(2)) - (s^(2) * sin(x)^(2)))
F: (θ, f(θ))
L: (f(θ); θ)
b = CurveCartesian((f(t) * cos(t)), (f(t) * sin(t)), t, 0, (2 * π))