In \[\Delta ABC\], \[\frac{\cos A}{a}+\frac{\cos B}{b}+\frac{\cos C}{c

1.	In \[\Delta ABC\], \[\frac{\cos A}{a}+\frac{\cos B}{b}+\frac{\cos C}{c}=\]
A.	\[\frac{{{a}^{2}}+{{b}^{2}}+{{c}^{2}}}{abc}\]
B.	\[\frac{{{a}^{2}}+{{b}^{2}}+{{c}^{2}}}{2abc}\]
C.	\[\frac{2({{a}^{2}}+{{b}^{2}}+{{c}^{2}})}{abc}\]
D.	\[{{a}^{2}}+{{b}^{2}}+{{c}^{2}}\]
Answer» C. \[\frac{2({{a}^{2}}+{{b}^{2}}+{{c}^{2}})}{abc}\]

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In \[\Delta ABC\], \[\frac{\cos A}{a}+\frac{\cos B}{b}+\frac{\cos C}{c}=\]

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