Simplify cos square(pi/4+x) - sin square (pi/4+x) Share with your friends Share 0 Varun.Rawat answered this cos2π4 + x - sin2π4 + x=cos 2π4 + x as, cos 2A - cos2A - sin2A=cos π2 + 2x=cos π/2 . cos 2x - sinπ/2 . sin 2x as, cosA+B = cos A. cos B - sin A . sin B=0 . cos 2x - 1 . sin 2x=- sin 2x=- 2sin x . cos x 1 View Full Answer
