# How do you convert r = 7 into cartesian form?

Jan 30, 2017

${x}^{2} + {y}^{2} = 49$

#### Explanation:

Covesion formula for Polars to cartesian;

${r}^{2} = {x}^{2} + {y}^{2}$

$x = r \cos \theta$

$y = r \sin \theta$

for $r = 7 \implies {r}^{2} = 49$

$\therefore {x}^{2} + {y}^{2} = 49$

a circle centre $\left(0 , 0\right) \text{ radius } 7$