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Asmir Waiba
Answers (1)
L.H.S =1+(TanA/SinB)²/ 1+(TanA/SinC)² = 1+Tan²A.Cosec²B/ 1+Tan²A/Cosec²C = 1+Tan²A(1+Cot²B)/1+Tan²A(1+Cot²C) =1+Tan²A+Tan²A.Cot²B/ 1+Tan²A+Tan²A.Cot²C =Sec²A+Tan²A.Cot²B/ Sec²A+Tan²A.Cot²C =[(1/Cos²A)+(Sin²A.Cot²B)/Cos²A]/
