Question

If cosx_sinx is 1/2 rnen tan 2x

Answer 1

Answer:

Here I am assuming that you Know that Sin 2x = 2 sin x * cos x and Cos 2x = cos^2 x - sin^2 x Now tan 2x = sin 2x / cos 2x Cos 2x = cos^2 x - sin^ 2 x => Cos 2x = cos^2 x - (1- cos^2 x) => Cos 2x = 2cos^2 x -1 Now cos x ...