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Home > PC > Chapter 11 > Lesson 11.2.1 > Problem 11-75

11-75.

Simplify the following into a single trigonometric term.

  1.  

    Review the angle sum identity for cosine.

  1.  

    Review the double-angle identity for sine.

  1.  

    Review the angle difference identity for sine.

  1.  

    This expression can be rewritten as .