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In triangleABC, (b+c)cosA+(c+a)cosB+(a+b...

In `triangleABC, (b+c)cosA+(c+a)cosB+(a+b)cosC=`

A

0

B

1

C

`a+b+c`

D

`2(a+b+c)`

Text Solution

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The correct Answer is:
C
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