Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 7 - Trigonometric Identities and Equations - 7.3 Sum and Difference Identities - 7.3 Exercises: 8

Answer

A

Work Step by Step

$\sin \left( A-B\right) =\sin A\cos B-\cos A\sin B\Rightarrow 8\rightarrow A$
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