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In a triangle ABC, (s-a)/11=(s-b)/12=(s-...

In a triangle ABC, `(s-a)/11=(s-b)/12=(s-c)/13`, then `tan^2 (A//2)=`

A

` (143)/( 432)`

B

` ( 13)/( 33)`

C

` ( 11)/( 39 ) `

D

` ( 12)/(37 )`

Text Solution

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The correct Answer is:
B
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