1.

डा छ- उप": (05 -{o"nq o

Answer»

Let theta = x

LHS:sin^2 x - sin^2 x. cos^2 x/cos^4 x

= sin^2 x(1 - cos^2 x)/ cos^4 x

= sin^2 x. sin^2 x/cos^4 x

= sin^4 x/cos^4 x

= tan^4 x

= RHS

Hence proved



Discussion

No Comment Found