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Q. 7

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Precalculus Enhanced with Graphing Utilities

Found in: Page 500

Book edition 6th

Author(s) Sullivan

Pages 1200 pages

ISBN 9780321795465

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Short Answer

Express the product $\sin (4 θ) \sin (2 θ)$ as a sum containing only sines or only cosines.

$\sin (4 θ) \sin (2 θ) = \frac{\cos (2 θ) - \cos (6 θ)}{2}$

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Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1. Given expression

$\sin (4 θ) \sin (2 θ)$

Step 2. Rewriting the expression

$2 \sin A \sin B = \cos (A - B) - \cos (A + B) S o, \sin (4 θ) \sin (2 θ) = \frac{\cos (2 θ) - \cos (6 θ)}{2}$

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Precalculus Enhanced with Graphing Utilities

Answers without the blur.

Short Answer

Express the product $\sin (4 θ) \sin (2 θ)$ as a sum containing only sines or only cosines.

Step by Step Solution

Step 1. Given expression

Step 2. Rewriting the expression

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Select your language

Precalculus Enhanced with Graphing Utilities

Answers without the blur.

Short Answer

Express the product sin(4θ)sin(2θ) as a sum containing only sines or only cosines.

Step by Step Solution

Step 1. Given expression

Step 2. Rewriting the expression

Most popular questions for Math Textbooks

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Express the product $\sin (4 θ) \sin (2 θ)$ as a sum containing only sines or only cosines.