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सिद्ध कीजिए कि [ 1/(sec^(2) A - cos^...

सिद्ध कीजिए कि
` [ 1/(sec^(2) A - cos^(2) A )+ 1/("cosec"^(2) A - sin^(2) A)] `
` * sin^(2) A * cos^(2) A = (1-sin^(2) A cos^(2) A)/(2 + sin^(2)A cos^(2) A)`

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