Chapter 7, 7.3 Exercises #54

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For the following exercises, algebraically find an equivalent function, only in terms of sin x and/or cos x, and then check the answer by graphing both equations.

cos(4x)

7.2 Exercises:

7.3 Exercises:

7.4 Exercises:

7.5 Exercises:

7.6 Exercise:

Practice Exercises:

Review Exercises: