A) 3
B) 1
C) 4
D) 2
Correct Answer: D
Solution :
\[\cot \frac{B}{2}.\cot \frac{C}{2}\] \[=\sqrt{\frac{s(s-b)}{(s-c)(s-a)}}\times \sqrt{\frac{s(s-c)}{(s-a)(s-b)}}\] \[=\frac{s}{s-a}=\frac{2a}{2a-a}=2\]\[(\because \,b+c=3a)\]You need to login to perform this action.
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