1) Find the cosine of 15° using the sum/difference formula Answers are to be in radical format.
1) Find the cosine of 15° using the sum/difference formula Answers are to be in radical format.
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.2: Trigonometric Functions Of Angles
Problem 4E
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