### Home > PC > Chapter 6 > Lesson 6.4.2 > Problem 6-160

6-160.

Solve for all possible values of :

1. Use the double-angle formula for sine on the left.

2. Use the angle difference formula for cosine on the right.

6-160.

Solve for all possible values of :

1. Use the double-angle formula for sine on the left.

2. Use the angle difference formula for cosine on the right.