3 with 5 Given that cos 2x =

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 28E
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3
Given that cos 2x =
with
<x < T, determine the exact value cos x.
5'
COS X =
(Simplify your answer. Type an exact answer, using radicals as needed. Rationalize the denominator.)
Transcribed Image Text:3 Given that cos 2x = with <x < T, determine the exact value cos x. 5' COS X = (Simplify your answer. Type an exact answer, using radicals as needed. Rationalize the denominator.)
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