Precalculus (10th Edition)

Published by Pearson
ISBN 10: 0-32197-907-9
ISBN 13: 978-0-32197-907-0

Chapter 7 - Analytic Trigonometry - 7.6 Double-angle and Half-angle Formulas - 7.6 Assess Your Understanding - Page 498: 56

Answer

See below.

Work Step by Step

$LHS=(2sin(2u))(cos(2u))=sin(4u)=RHS$
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