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Home > PC > Chapter 6 > Lesson 6.3.2 > Problem 6-124

6-124.

Prove that the following trigonometric equations are true.  

  1.  

    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.  

    1. Multiply out on the left side.
    2. Use the Fundamental Pythagorean Identity.