Find the exact value of cos 3, expressing your answer with a rational denominator.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 91RE
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Find the exact value of cos
3, expressing your answer with a rational denominator.
Transcribed Image Text:Find the exact value of cos 3, expressing your answer with a rational denominator.
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