In a triangleABC , if 1/(b+c)+1/(c+a)=3/...

In a `triangleABC` , if `1/(b+c)+1/(c+a)=3/(a+b+c)`, then `angleC`=

A

(a) `30^(@)`

B

(b) `60^(@)`

C

(c) `90^(@)`

D

(d) `120^(@)`

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The correct Answer is:

B

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