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In any triangle ABC,1-tan(A/2)tan(B/2)=...

In any triangle `ABC,1-tan(A/2)tan(B/2)=`

A

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

B

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

C

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

D

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

Text Solution

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The correct Answer is:
D
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