In Exercises 1 and 2, use the cofunction identities to evaluate the expression without using a calculator.

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In Exercises 1 and 2, use the cofunction identities to evaluate the expression without using a calculator.
1. sin2 25° + sin2 65°
2. tan2 63° + cot2 16° − sec2 74° − csc2 27°

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Algebra and Trigonometry

ISBN: 978-1337271172

10th edition

Authors: Ron Larson

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Question Posted: Feb 14, 2018 03:17 AM

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In Exercises 1 and 2, use the cofunction identities to evaluate the expression without using a calculator.

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1 sin 2 25 sin 2 65 sin 2 25 o cos2 90 o 65 o sin 2 25 o c...View the full answer

Algebra and Trigonometry

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