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In triangleABC, If (1)/(b+c)+(1)/(c+a)=(...

In `triangleABC`, If `(1)/(b+c)+(1)/(c+a)=(3)/(a+b+c)`, then `cosC=`

A

`(1)/(2)`

B

`(-1)/(2)`

C

`(sqrt(3))/(2)`

D

`(1)/(sqrt(2))`

Text Solution

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The correct Answer is:
A
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