Question

2cos^2x-2sin^2x=1 then x=...​

Answer 1

${\huge {\mathfrak {Answer :-}}}$

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2 cos^2 x - 2 sin^2 x = 1

Or, 2 (cos^2 x - sin^2 x) = 1

Or, cos 2x = 1/2

Or, cos 2x = cos 60°

Or, 2x = 60°

Or, x = 30°

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Thanks..

Answer 2

Step-by-step explanation:

2 cos^2 x - 2 sin^2 x = 1

Or, 2 (cos^2 x - sin^2 x) = 1

Or, cos 2x = 1/2

Or, cos 2x = cos 60°

Or, 2x = 60°

Or, x = 30°.