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In triangleABC, If (b+c)/(11)=(c+a)/(12)...

In `triangleABC`, If `(b+c)/(11)=(c+a)/(12)=(a+b)/(13)`, then `cosC=`

A

`(1)/(2)`

B

`(1)/(3)`

C

`(1)/(4)`

D

`(1)/(5)`

Text Solution

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The correct Answer is:
D
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