### Home > CALC > Chapter 11 > Lesson 11.1.1 > Problem11-7

11-7.
1. Without your calculator, find all values of θ for which these polar curves cross the pole (origin). Then, graph the polar curve on your calculator and verify your answers. Homework Help ✎

1. r = sin 3θ + cos 3θ

2. r = 3sin2 θ − 2

A polar curve intersects the origin when r = 0.