show that, sinAcosA(tanA+cotA)=1
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LHS
=sin A cos A tan A + sinA cos A cot A
=sin A cos A sinA/cosA + sin A cos A cosA/sin A
=sin^2 A + cos^2A
=1
RHS
(proved)
=sin A cos A tan A + sinA cos A cot A
=sin A cos A sinA/cosA + sin A cos A cosA/sin A
=sin^2 A + cos^2A
=1
RHS
(proved)
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