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Home > PC3 > Chapter 9 > Lesson 9.1.2 > Problem 9-31
9-31.
Simplify each of the following trigonometric expressions.
1. Change all terms to sine and cosine.
2. Get a common denominator for the terms in the parentheses.
3. Use the Fundamental Pythagorean Identity.
1. Multiply out on the left side.
2. Use the Fundamental Pythagorean Identity.