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( cos A) /( a) + ( cos B) /( b ) + ( co...

` ( cos A) /( a) + ( cos B) /( b ) + ( cos C ) /( c ) `

A

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

B

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

C

` ( a^(2) + b^( 2) + c^(2) ) /( 4abc) `

D

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

Text Solution

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The correct Answer is:
A
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