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Class 10 Cbsce Trigo..........
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LHS = sinA / 1- cosA
= sinA(1+cosA) / (1-cosA)(1+cosA)
= sinA(1+cosA) / 1-cos^2A
= sinA(1+cosA) / sin^2A
= 1+cosA / sinA
= 1/sinA + cosA / sinA
= cosecA + cotA
RHS = cosecA + cotA
LHS = RHS
= sinA(1+cosA) / (1-cosA)(1+cosA)
= sinA(1+cosA) / 1-cos^2A
= sinA(1+cosA) / sin^2A
= 1+cosA / sinA
= 1/sinA + cosA / sinA
= cosecA + cotA
RHS = cosecA + cotA
LHS = RHS
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hope it helps you....
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