Chapter 7, 7.3 Exercises #23

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For the following exercises, find the exact values of a) sin (x/2), b) cos (x/2), and c) tan (x/2) without solving for x, when 0 ≤ x ≤ 360°.

If sec x = −4, and x is in quadrant II.

7.2 Exercises:

7.3 Exercises:

7.4 Exercises:

7.5 Exercises:

7.6 Exercise:

Practice Exercises:

Review Exercises: