Find the general solution of the equation 4cos^2x=1 - Mathematics and Statistics

Find the general solution of the equation 4cos^2x=1

Solution

Given:

4cos^2x=1

cos^2x=1/4

cos^2x=cos^2(pi/3)

["Using " cos^2x=cos^2alpha => x=npi+-alpha]

x=npi+-pi/3" where " n in Z

Concept: Trigonometric Functions - General Solution of Trigonometric Equation of the Type
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