Answer
cos(x)
Work Step by Step
Note: Sine and Cosine functions are related by a phase shift of $\frac{\pi}{2}$
Using the note above:
sin($\frac{\pi}{2} - x)$ = cos(x)
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 7 - Review Exercises - Page 552: 3
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