r = 4 (slider from 1 to 10, step 1)
n = 7 (slider from 1 to 10, step 1)
b = 3.12 (slider from 0 to 6.29, step 0.01)
a = CurveCartesian(r * cos(t) * cos(n * t), r * sin(t) * cos(n * t), t, 0.0, b)
Text1: "x(t) = " + r + " cos(t) cos (" + n + "t)"
Text2: "y(t) = " + r + " sin(t) cos (" + n + "t)"