How do I solve 4cos^2 x -1=0

Answer for Question How do I solve 4cos^2 x -1=0. is given below:

Q.) How do I solve 4cos^2 x -1=0

Correct Answer is

How do I solve 4cos^2 x -1=0 <=> cosx = +1/2 or cosx = -1/2; cosx = +1/2 => x = +π/3 + 2kπ, where k is an integer or x = -π/3 + 2kπ, where k is an integer; cosx = -1/2 => x = +2π/3 + 2kπ, where k is an integer or x = -2π/3 + 2kπ, where k is an integer;

Conclusion:

This correct answer to this statement is How do I solve 4cos^2 x -1=0 <=> cosx = +1/2 or cosx = -1/2; cosx = +1/2 => x = +π/3 + 2kπ, where k is an integer or x = -π/3 + 2kπ, where k is an integer; cosx = -1/2 => x = +2π/3 + 2kπ, where k is an integer or x = -2π/3 + 2kπ, where k is an integer;.

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