9. Polar Equations

Graph each polar equation. Also, identify the type of polar graph.

r = 2 + 2 cos θ

Graph each polar equation. Also, identify the type of polar graph.

r² = 4 cos 2θ

In Exercises 35–44, test for symmetry and then graph each polar equation. r = 1 / 1−cos θ

In Exercises 35–44, test for symmetry and then graph each polar equation. r = 2 + 3 sin 2θ

In Exercises 64–70, graph each polar equation. Be sure to test for symmetry. r = 2 + 2 sin θ