Explanation Given information: cos 2 θ = 2 cos 2 θ − 1 Formula used: cos 2 x = 1 2 ( 1 + cos 2 x ) (Double angle formula) Calculation: Identity cos 2 x = 1 2 ( 1 + cos 2 x ) (Double angle formula) Write the identity in terms of θ

ACHIEVE FOR CALCULUS 4 TERM >CSI CUSTOM<

21st Edition

ISBN: 9781319438333

Author: Rogawski

Publisher: MAC HIGHER

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Chapter 1.4, Problem 47E

To determine

Toderive the identity cos2θ=2cos2θ−1.

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Chapter 1.4, Problem 46E

Chapter 1.4, Problem 48E

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Chapter 1 Solutions

ACHIEVE FOR CALCULUS 4 TERM >CSI CUSTOM<

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Toderive the identity cos 2 θ = 2 cos 2 θ − 1 .

Solution Summary: The author explains how to determine the identity of mathrmcos2theta =2

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Toderive the identity cos2θ=2cos2θ−1.

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Chapter 1 Solutions