# What is the Cartesian form of (-36,2pi)?

Polar form: $\left(r , \theta\right) = \left(- 36 , 2 \pi\right) \textcolor{w h i t e}{\text{XXX}}$Cartesian form: $\left(x , y\right) = \left(- 36 , 0\right)$
An angle of $\theta = 2 \pi$ is a complete circle, placing the point back on the X-axis (when viewed in Cartesian terms).
However, the minus sign on the radius $r = - 36$ indicates that the point is on the opposite side of the origin (and, in this case at a distance of $36$ to the left of the origin)