Algebra 2 (1st Edition)

Published by McDougal Littell
ISBN 10: 0618595414
ISBN 13: 978-0-61859-541-9

Chapter 14 Trigonometric Graphs, Identities, and Equations - 14.7 Apply Double-Angle and Half-Angle Formulas - 14.7 Exercises - Skill Practice - Page 960: 22


$\sin \theta$

Work Step by Step

Use the Identity $\sin 2 \theta =2 \sin \theta \cos \theta$ Thus, we have $\dfrac{ \sin 2 \theta}{ 2\cos \theta}=\dfrac{ 2 \sin \theta \cos \theta}{ 2 \cos \theta}=\sin \theta$
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