If `cos 2theta = 2 sin^2theta` then `theta`

If cos2 theta=2sin^(2)theta then theta

2cos^2theta-2sin^2theta=1 then theta =

If 2cos^(2)theta-2sin^(2)theta=1, then theta is equal to

If 2cos^(2)theta-2sin^(2)theta=1, then theta equals to

If x = 2 cos theta - cos 2 theta, y = 2 sin theta - sin 2 theta, find dy/dx at theta = pi/2

2 cos ^(2) theta - 2 sin ^(2) theta =1, then theta =

If 2 cos ^(2) theta - 2 sin ^(2) theta =1, then theta = ............. A) 15^(@) B) 30^(@) C) 45^(@) D) 60^(@)

Find (dy)/(dx) in the following x = cos 2 theta + 2 cos theta, y = sin 2 theta - 2 sin theta

Write the truth values of the following statements : (i) Two is the only even prime number (ii) cos 2 theta = cos^2 theta -sin^2 theta for all theta in R

Show that (cos^(2)theta - sin^(2)theta)=(2tan theta)/((1- tan^(2)theta)) is not an identity .