Answer
See below.
Work Step by Step
This implies that the graph of $\sin(x)$ is the same as the graph of $\cos(x)$, just shifted by $\pi/2$ to the right.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 14 Trigonometric Graphs, Identities, and Equations - 14.3 Verify Trigonometric Identities - 14.3 Exercises - Skill Practice - Page 927: 2
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