If in any \[\Delta ABC\], \[\cot \frac{A}{2},\cot \frac{B}{2},\cos \frac{C}{2}\]are in A. P. then [MP PET 2003]

\[\cot \frac{A}{2}\cot \frac{C}{2}=3\]

\[\cot \frac{A}{2}\cot \frac{B}{2}=4\]

\[\cot \frac{B}{2}\cot \frac{C}{2}=1\]

\[\cot \frac{B}{2}\tan \frac{C}{2}=0\]

If in any \[\Delta ABC\], \[\cot \frac{A}{2},\cot \frac{B}{2},\cos \fr

1.	If in any \[\Delta ABC\], \[\cot \frac{A}{2},\cot \frac{B}{2},\cos \frac{C}{2}\]are in A. P. then [MP PET 2003]
A.	\[\cot \frac{A}{2}\cot \frac{B}{2}=4\]
B.	\[\cot \frac{A}{2}\cot \frac{C}{2}=3\]
C.	\[\cot \frac{B}{2}\cot \frac{C}{2}=1\]
D.	\[\cot \frac{B}{2}\tan \frac{C}{2}=0\]
Answer» B. \[\cot \frac{A}{2}\cot \frac{C}{2}=3\]

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If in any \[\Delta ABC\], \[\cot \frac{A}{2},\cot \frac{B}{2},\cos \frac{C}{2}\]are in A. P. then [MP PET 2003]

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