In a \( \triangle \mathrm{ABC} \), if \( 3 \mathrm{a}=\mathrm{b}+\m...

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In a \( \triangle \mathrm{ABC} \), if \( 3 \mathrm{a}=\mathrm{b}+\mathrm{c} \), then the value of \( \cot \frac{\mathrm{B}}{2} \cot \frac{\mathrm{C}}{2} \)
P is

W)
(1) 1
(2) 2
(3) \( \sqrt{3} \)
(4) \( \sqrt{2} \)
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