Use the identity of Exercise 48 to show that cos /8 is equal to 1/2 + 2/4.

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Use the identity of Exercise 48 to show that cos π/8 is equal to √1/2 + √2/4.

Data From Exercise 48

Derive the identity using the identities listed in this section.

cos²θ/2 = 1 + cos θ/2

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Calculus

ISBN: 9781319055844

4th Edition

Authors: Jon Rogawski, Colin Adams, Robert Franzosa

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Question Posted: Nov 03, 2023 07:27 AM

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Use the identity of Exercise 48 to show that cos /8 is equal to 1/2 + 2/4.

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with 4 yields Because ...View the full answer

Calculus

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