f = Function(61.0 - 61.0 * cos(2.0 * 3.1415 * x / 30.0), 0.0, 240.0)
M = (0, 61)
c = Circle(M, 61.0)
h(x) = 61.0 - 61.0 * cos(2.0 * 3.14 * x / 30.0)
f' = Derivative(f)
f'' = Derivative(f')
A = Intersect(f, h, (1.7748737633706645E-6, 4.213518423057394E-12))
B = Intersect(f, h, (1.7748737633706645E-6, 4.213518423057394E-12))
D = Point(f)
a = OrthogonalLine(D, xAxis)
C = Intersect(f', a, (7.522164818315592, 12.775298420599002))
E = Intersect(f'', a, (7.522164818315592, -0.012296285789544935))