Trigonometry (10th Edition)

Published by Pearson
ISBN 10: 0321671775
ISBN 13: 978-0-32167-177-6

Chapter 5 - Trigonometric Identities - Section 5.1 Fundamental Identities - 5.1 Exercises - Page 196: 93

Answer

The graphs are exactly the same to the given equation is an identity. Refer to the graph below.

Work Step by Step

Use a graphing utility to graph $y=\cos{2x}$ and $y=1-\sin^2{x}$. Refer to the graph above. Since the graph are are exactly the same, then the given equation is an identity.
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