tt = -7.6 (slider from -10 to 0, step 0.1)
a = CurveCartesian(t - (3 * sin(t)), 4 - (3 * cos(t)), t, 0, 10)
A = Intersect(xAxis, yAxis)
Q: ((-tt) - (3 * sin((-tt))), 4 - (3 * cos((-tt))))
b = CurveCartesian((-t) - (3 * sin((-t))), 4 - (3 * cos((-t))), t, -10, 0)
v = Vector(A, Q)
t = 7.4 (slider from 0 to 10, step 0.1)
P: (t - (3 * sin(t)), 4 - (3 * cos(t)))
u = Vector(A, P)