In \[\Delta ABC,\left( \cot \frac{A}{2}+\cot \frac{B}{2} \right)\,\left( a{{\sin }^{2}}\frac{B}{2}+b{{\sin }^{2}}\frac{A}{2} \right)\]= [Roorkee 1988]

In \[\Delta ABC,\left( \cot \frac{A}{2}+\cot \frac{B}{2} \right)\,\lef

1.	In \[\Delta ABC,\left( \cot \frac{A}{2}+\cot \frac{B}{2} \right)\,\left( a{{\sin }^{2}}\frac{B}{2}+b{{\sin }^{2}}\frac{A}{2} \right)\]= [Roorkee 1988]
A.	\[\cot C\]
B.	\[c\cot C\]
C.	\[\cot \frac{C}{2}\]
D.	\[c\cot \frac{C}{2}\]
Answer» E.

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In \[\Delta ABC,\left( \cot \frac{A}{2}+\cot \frac{B}{2} \right)\,\left( a{{\sin }^{2}}\frac{B}{2}+b{{\sin }^{2}}\frac{A}{2} \right)\]= [Roorkee 1988]

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