\[\frac{a\cos A+b\cos B+c\cos C}{a+b+c}=\] [Orissa JEE 2004] – McqOptions

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1.	\[\frac{a\cos A+b\cos B+c\cos C}{a+b+c}=\] [Orissa JEE 2004]
A.	1/r
B.	r/R
C.	R/r
D.	1/R
Answer» C. R/r

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