19.If tan A = 2, evaluate : sec A sin A + tanA_ cosecA: – InterviewSolution

1.	19.If tan A = 2, evaluate : sec A sin A + tanA_ cosecA:
Answer» tanA=2, cotA=1/21+(cotA)^2=(cosecA)^21+1/4=(cosecA)^2(5/4)^(1/2)=cosecAcosecA=√5/2tanA+(tanA)^2-cosecA2+4-√5/26-√5/2

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