A) bc
B) ca
C) ab
D) abc
Correct Answer: A
Solution :
\[\sin \frac{A}{2}=\sqrt{\frac{(s-b)(s-c)}{bc}}\] \[\Rightarrow bc{{\sin }^{2}}\frac{A}{2}=(s-b)(s-c)\] Hence\[x=bc\].
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