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I nDeltaA B C ,1-tan(A/2)tan(B/2)=...

`I nDeltaA B C ,1-tan(A/2)tan(B/2)=`

A

`(1)/(a+b+c)`

B

`(2)/(a+b+c)`

C

`(c)/(a+b+c)`

D

`(2c)/(a+b+c)`

Text Solution

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The correct Answer is:
D
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