### Home > PC3 > Chapter 12 > Lesson 12.1.3 > Problem12-45

12-45.

Let $r = 2 − 4\cos(θ)$.

1. Graph the curve.

2. Rewrite the equation in rectangular form.

Multiply the equation by $r$. Then make the necessary substitutions.

3. Write an equation that will rotate the curve by an angle of $-\frac { 5 \pi } { 6 }$.