Answer
$$(\sin\theta+1)(\sin\theta-1)$$
Work Step by Step
$$\sin^{2}\theta-1$$
Factor out using the Difference of Squares
$$(\sin\theta+1)(\sin\theta-1)$$
Trigonometry (10th Edition)
by Lial, Margaret L.; Hornsby, John; Schneider, David I.; Daniels, Callie
Published by
Pearson
ISBN 10:
0321671775
ISBN 13:
978-0-32167-177-6
Chapter 5 - Trigonometric Identities - Section 5.2 Verifying Trigonometric Identities - 5.2 Exercises - Page 202: 13
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