Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 19E
Related questions
Question
Evaluate the product for the following using a sum or difference of two functions.
cos(45°) cos(15°)
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