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In a triangle ABC, (b+c)(bc)cosA+(a+c)(a...

In a triangle ABC,
`(b+c)(bc)cosA+(a+c)(ac)cosB+(a+b)(ab)cosC` is

A

`a^(2)+b^(2)+c^(2)`

B

`a^(3)+b^(3)+c^(3)`

C

`(a+b+c)(a^(2)+b^(2)+c^(2))`

D

`(a+b+c)(ab+bc+ca)`

Text Solution

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The correct Answer is:
B
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