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r^(2) cot ""(A)/(2) cot ""(B)/(2) cot "...

` r^(2) cot ""(A)/(2) cot ""(B)/(2) cot ""(C)/(2) `

A

`Delta`

B

`2Delta`

C

`4Delta`

D

`(Delta)/(2)`

Text Solution

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The correct Answer is:
A
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