If k be the perimeter of the triangle ABC , then `bCos^2(C/2)` + c`Cos – InterviewSolution

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1.	If k be the perimeter of the triangle ABC , then `bCos^2(C/2)` + c`Cos^2(B/2)` is equal toA. `2s`B. `s`C. `0`D. `a+b-c`
Answer» Correct Answer - B

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