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

8-115.

Simplify each the following trigonometric expressions.

  1. 1. Rewrite everything in terms of sine and cosine.
    2. Get a common denominator.
    3. Use the Fundamental Pythagorean Identity.
    4. Simplify.

  2. Use the Pythagorean Identities.
    Change their forms to get s.