The direction cosines of the line having direction ratios 1, 2, 3 are :
The direction cosines of the line having direction ratios 1, 2, 3 are :
(A) \(\frac{1}{\sqrt 7}\),\(\frac{2}{\sqrt 7}\),\(\frac{3}{\sqrt 7}\)
(B) \(\frac{1}{\sqrt {11}}\),\(\frac{2}{\sqrt {11}}\),\(\frac{3}{\sqrt {11}}\)
(C) \(\frac{1}{\sqrt {14}}\),\(\frac{2}{\sqrt {14}}\),\(\frac{3}{\sqrt {14}}\)
(D) None of these
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Option : (C) \(\frac{1}{\sqrt {14}}\),\(\frac{2}{\sqrt {14}}\),\(\frac{3}{\sqrt {14}}\)
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