Answer
$\sin x$
Work Step by Step
Using the given identities: $\sin (\pi/2-x)\tan x=\cos x\frac{\sin x}{\cos x}=\sin x$
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 - Chapter Review - Page 966: 18
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