Trigonometry Examples

$r = 1 + 2 \cos (2 (3))$

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.

$r = 1 + 2 \cos (2 (3))$

Step 2