### Home > PC > Chapter 11 > Lesson 11.2.1 > Problem11-72

11-72.

Transform the following polar equations into rectangular form.

1. $r^{2} = \cos θ \sin θ$

Multiply both sides of the equation by $r^{2}$.

$\textit{r}^4=(\textit{r}\cos\theta)(\textit{r}\sin\theta)$

Substitute the polar coordinate conversions.

$\left(x^{2} + y^{2}\right)^{2} = xy$

1. $r = −3 \csc θ$

Multiply both sides of the equation by $\sin θ$.