How do you convert 3y=2y^2-x^2 into a polar equation?

1 Answer
May 10, 2018

r = {3 sin theta} / { 2 sin ^2 theta - cos ^2 theta }

Explanation:

x = r cos theta

y = r sin theta

3 y = 2y^2 - x^2

3 r sin theta = 2 r^2 sin ^2 theta - r ^2 cos ^2 theta

3 sin theta = r(2 sin ^2 theta - cos ^2 theta)

r = {3 sin theta} / { 2 sin ^2 theta - cos ^2 theta }

We stop here.