Precalculus Examples

$r = 2 - \cos (θ)$

Step 1

Using the formula $r = a \pm b \sin (θ)$ or $r = a \pm b \cos (θ)$ , where $a > 0$ , $b > 0$ and $a \neq b$ , graph the limacon.

$r = 2 - \cos (θ)$

Step 2