### Home > PC3 > Chapter 8 > Lesson 8.3.3 > Problem 8-115

8-115.

Simplify each the following trigonometric expressions.

1. Rewrite everything in terms of sine and cosine.

2. Get a common denominator.

3. Use the Fundamental Pythagorean Identity.

4. Simplify.Use the Pythagorean Identities.

Change their forms to gets.