(tan(A) %2B tan(B))/(cot(A) %2B cot(B))=tan(A) – InterviewSolution

1.	(tan(A) %2B tan(B))/(cot(A) %2B cot(B))=tan(A)
Answer» sinA/ cosA + sinA/ cosA/ cosB/ SinB + cosB/ sin B= sinacosa+sinacosa/ cosasina x cosBsinb + cosbsinb/ sinBsina=1/ cosa-sin a x SinB sinB== sina/ cosa x sinb/cos b= Tan a tanb

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