Question

prove that:I am getting a little confusion

Answer 1

take Lhs
cosA-sinA+1 /cos A + sinA-1
numerator and denominator dividng by sinA
cosecA + CotA - 1 / cotA - CosecA + 1
cosecA + CotA - ( cosecA^2 - CotA^2) / cotA - CosecA + 1
cosecA + CotA - (cosecA + CotA) (cosecA - CotA) /cotA - CosecA + 1
(cosecA + CotA)( cotA - CosecA + 1 ) / cotA - cosecA +1
cosecA + CotA
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