tan a+cot a=sec a.cosec a
prove it
please help me
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LHS = tan A + cot A
= sin A / cos A + cos A / sin A
= sin^2 A + cos^2 A / sin A * cos A
= 1 / sin A * cos A
= cosec A * sec A
= RHS
Hence, proved.
= sin A / cos A + cos A / sin A
= sin^2 A + cos^2 A / sin A * cos A
= 1 / sin A * cos A
= cosec A * sec A
= RHS
Hence, proved.
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