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In any Delta^(l e) ABC then cot""A/2+cot...

In any `Delta^(l e)` ABC then `cot""A/2+cot"+"B/2""cot""C/2=..........`

A

`sin""A/2sin""B/2sin""C/2`

B

`cot""A/2.cot""B/2.cot""C/2`

C

`cosA.cosB.cosC`

D

`sin""A/2.cos""B/2sin""C/2`

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The correct Answer is:
B
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