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Here: sin^2 (2x) (cosec^2 (x)-sec^2 (x))= 4cos2x
Sin^2 (2x) è4sin^2x cos^2 x
cosec^2 (x)-sec^2 (x) è 1/sin^2 x – 1/ cos^2 x = (cos^2 x – sin^2 x ) / (sin^2 x cos^2 X)
cos^2x – sin^2 x = cos 2x
now just simplify...
P.S. kinda difficult to put each and every step...that’s why did this way..
You are great ! Do you do M1 & S1 ?