r = cos(4*theta), x = r * cos(theta), y = r * sin(theta)Write the polar equation r = cos(4*theta) in the parametric form x = x(t), y = y(t)

x = cos(4*t) * cos(t)

y = cos(4*t) * sin(t)

Do the functions have to be in terms of t or can they be in theta?

Am I correct?