[1/sec^{2}a-cos^{2}a + 1/cosec^{2}a-sin^{2}a]sin^{2}acos^{2}a = 1-(cos^{2}a)(sin^{2}a)/2+(cos^{2}a)(sin^{2}a)
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Originally Posted by srirahulan [1/sec^{2}a-cos^{2}a + 1/cosec^{2}a-sin^{2}a]sin^{2}acos^{2}a = 1-(cos^{2}a)(sin^{2}a)/2+(cos^{2}a)(sin^{2}a) Please put some brackets where they're needed, I can't read this as is.
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