Use substitution to determine whether the given x-value is a solution of the equation: cos x = √2/2, x = π/4.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 64E
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Use substitution to determine whether the given x-value is a solution of the equation: cos x = √2/2, x = π/4.

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