Solve for x in the interval [0,27]. Make any necessary substitutions using identities. Keep answers exact whenever possible. 10cos² (2x) + 7 cos(2x) = 6

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 20E
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2. Solve for x in the interval [0,27]. Make any necessary substitutions using identities. Keep
answers exact whenever possible.
10cos² (2x) + 7 cos(2x) = 6
Transcribed Image Text:2. Solve for x in the interval [0,27]. Make any necessary substitutions using identities. Keep answers exact whenever possible. 10cos² (2x) + 7 cos(2x) = 6
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