In `triangleABC, tan((A)/(2))tan((B)/(2))=`A. `(c-(a+b))/(2(a+b+c))`B. – InterviewSolution

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1.	In `triangleABC, tan((A)/(2))tan((B)/(2))=`A. `(c-(a+b))/(2(a+b+c))`B. `(c-(a+b))/(a+b+c)`C. `(a+b-c)/(2(a+b+c))`D. `(a+b-c)/(a+b+c)`
Answer» Correct Answer - D

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