Explanation Given information: c o s ( θ + π ) Formula used: cos ( α + β ) = cos α . cos β − sin α . sin β Calculation: Derive that cos ( θ + π ) = − cos θ Now let us start the simplification with cos ( θ + π ) (expanding it by addition formula) cos ( θ + π ) = cos θ

4th Edition

ISBN: 9781319309671

Author: Rogawski

Publisher: MAC HIGHER

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Chapter 1.4, Problem 51E

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To derive the identity cos(θ+π)=−cosθ.

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Chapter 1.4, Problem 50E

Chapter 1.4, Problem 52E

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Chapter 1 Solutions

CALCULUS: EARLY TRANS 4TH ED W/ ACCESS

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To derive the identity cos ( θ + π ) = − cos θ .

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To derive the identity cos(θ+π)=−cosθ.

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Chapter 1 Solutions