A=[COS2X SIN2X] [-SIN2X COS 2X] IT IS A matrix... find A2 Share with your friends Share 0 Varun.Rawat answered this We have,A = cos 2x sin 2x- sin 2xcos 2x⇒A2 = A × A = cos 2x sin 2x- sin 2xcos 2x × cos 2x sin 2x- sin 2xcos 2x⇒A2 = cos 2x . cos 2x - sin 2x . sin 2xcos 2x . sin 2x + sin 2x . cos 2x- sin 2x . cos 2x - cos 2x . sin 2x- sin 2x . sin 2x + cos 2x . cos 2x⇒A2 = cos22x- sin22x2 sin 2x . cos 2x-2sin 2x . cos 2xcos22x- sin22x = cos 4xsin 4x-sin 4xcos 4x 4 View Full Answer
