A) 6
B) 12
C) 16
D) 20
Correct Answer: B
Solution :
[b] \[r=\tan \left( \frac{A}{2} \right)\left( s-a \right)\] \[\Rightarrow \,\,\,r=\frac{1}{\sqrt{3}}\,\,\left( \frac{AB+BC+CA}{2}-BC \right)\] \[\Rightarrow \,\,\,\,{{\left( \frac{AB-BC+CA}{r} \right)}^{2}}=12\]You need to login to perform this action.
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