Answer
makes sense
Work Step by Step
This statement makes sense because to prove a trigonometric identity, we need to show that after some transformations, the left-hand side is the same as the right-hand side.
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter 5 - Section 5.1 - Verifying Trigonometric Identities - Exercise Set - Page 660: 89
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