If $A + B + C = {180^o},$ then the value of $\cot \frac{A}{2} + \cot \frac{B}{2} + \cot \frac{C}{2}$ will be
If $A + B + C = {180^o},$ then the value of $\cot \frac{A}{2} + \cot \frac{B}{2} + \cot \frac{C}{2}$ will be
- A
$2\cot \frac{A}{2}\cot \frac{B}{2}\cot \frac{C}{2}$
- B
$4\cot \frac{A}{2}\cot \frac{B}{2}\cot \frac{C}{2}$
- C
$\cot \frac{A}{2}\cot \frac{B}{2}\cot \frac{C}{2}$
- D
$8\,\cot \frac{A}{2}\cot \frac{B}{2}\cot \frac{C}{2}$
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