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डा छ- उप": (05 -{o"nq o |
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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 |
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