[" R If "cos((pi)/(4)-x)cos2x+sin x sin2sec x=cos x sin2x sec x+],[cos((pi)/(4)+x)cos2x" then possible value of "sec x" is "]

If cos((pi)/(4)-x)cos2x+sin x sin2x sec x=cos x sin2x sec x+cos((pi)/(4)+x)cos2x then possible value of sec x is

If cos(pi/4-x)cos2x+sinxsin2xsecx=cos x sin 2x sec x+cos(pi/4+x)cos 2x then possible value of sec x is

( sin x - cos x)^(2) + cos^(2) ((pi)/(4) - x) in

cos x-sin x = sqrt (2) cos (x + (pi) / (4))

(sin x + cos x)^(2) + cos^(2)((pi)/(4) + x) in

If sin^(4)2x+cos^(4)2x=sin2x*cos2x then x=

cos(2pi -x) cos (-x) - sin(2pi +x) sin (-x) = 0

The value of cos y cos ((pi)/(2) - x) - cos ((pi)/(2) - y) cos x + sin y cos ((pi)/(2) - x) + cos x sin ((pi)/(2) - y) is zero if

(cos (pi +x) cos (-x))/( sin (pi -x) cos ((pi )/(2) + x))= cot ^(2) x

(cos (pi +x) cos (-x))/( sin (pi -x) cos ((pi )/(2) + x))= cot ^(2) x