If a line has direction ratios 2, -3, 7 then find the direction cosin – McqOptions

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1.	If a line has direction ratios 2, -3, 7 then find the direction cosines.
A.	l=\(\frac{2}{\sqrt{62}},m=-\frac{7}{\sqrt{62}},n=\frac{7}{\sqrt{62}}\)
B.	l=\(\frac{2}{\sqrt{6}},m=-\frac{3}{\sqrt{6}},n=\frac{7}{\sqrt{6}}\)
C.	l=-\(\frac{2}{\sqrt{62}},m=-\frac{3}{\sqrt{62}},n=-\frac{7}{\sqrt{62}}\)
D.	l=\(\frac{2}{\sqrt{62}},m=-\frac{3}{\sqrt{62}},n=\frac{7}{\sqrt{62}}\)
Answer» E.

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