Simplify and evaluate. cos 70° cos 25° + sin 70° sin 25°

Trigonometry (MindTap Course List)
10th Edition
ISBN:9781337278461
Author:Ron Larson
Publisher:Ron Larson
Chapter2: Analytic Trigonometry
Section2.1: Using Fundamental Identities
Problem 2ECP
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Simplify and evaluate.
cos 70° cos 25° + sin 70° sin 25°
Transcribed Image Text:Simplify and evaluate. cos 70° cos 25° + sin 70° sin 25°
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