# What is the Cartesian form of ( 12 , ( - 15pi)/2 ) ?

(0, 12)

#### Explanation:

Given $r = 12$ and $\theta = - 15 \frac{\pi}{2}$

$x = r \cdot \cos \theta$ and $y = r \cdot \sin \theta$

$x = 0$

$y = 12$