Question

if you have a parametric equation grapher, graph the equations over the given intervals 

a. Epicycloid x = 9 cos t - cos 9t, y = 9 sin t - sin 9t; 0<=t<=2pai

b. Hypocycloid x = 8 cos t + 2 cos 4t, y = 8 sin t - 2 sin 4t; 0<= t<=2pai

c. Hypotrochoid x = cos t + 5 cos 3t, y = 6 cos t - 5 sin 3t; 0<=t <=2pai

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