If the direction ratios of a line are \[1,-3,\,2\], then the direction cosines of the line are [MP PET 1997, Pb. CET 2002]

\[\frac{1}{\sqrt{14}},\frac{2}{\sqrt{14}},\frac{3}{\sqrt{14}}\]

\[\frac{1}{\sqrt{14}},\frac{-3}{\sqrt{14}},\frac{2}{\sqrt{14}}\]

\[\frac{-1}{\sqrt{14}},\frac{3}{\sqrt{14}},\frac{-2}{\sqrt{14}}\]

\[\frac{-1}{\sqrt{14}},\frac{-2}{\sqrt{14}},\frac{-3}{\sqrt{14}}\]

If the direction ratios of a line are \[1,-3,\,2\], then the direction

1.	If the direction ratios of a line are \[1,-3,\,2\], then the direction cosines of the line are [MP PET 1997, Pb. CET 2002]
A.	\[\frac{1}{\sqrt{14}},\frac{-3}{\sqrt{14}},\frac{2}{\sqrt{14}}\]
B.	\[\frac{1}{\sqrt{14}},\frac{2}{\sqrt{14}},\frac{3}{\sqrt{14}}\]
C.	\[\frac{-1}{\sqrt{14}},\frac{3}{\sqrt{14}},\frac{-2}{\sqrt{14}}\]
D.	\[\frac{-1}{\sqrt{14}},\frac{-2}{\sqrt{14}},\frac{-3}{\sqrt{14}}\]
Answer» B. \[\frac{1}{\sqrt{14}},\frac{2}{\sqrt{14}},\frac{3}{\sqrt{14}}\]

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If the direction ratios of a line are \[1,-3,\,2\], then the direction cosines of the line are [MP PET 1997, Pb. CET 2002]

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