Find the exact value of cos20 given sin0 =- and 0 < 0 < 13

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 56E
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Find the exact value of cos20 given sin0 = and 0 < 0
13
Transcribed Image Text:work. 5 Find the exact value of cos20 given sin0 = and 0 < 0 13
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