If `-2, 2, 1` are direction ratios of a line, then its direction cosines are

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Q 2117801780.     If `-2, 2, 1` are direction ratios of a line, then its direction

cosines are
A

`-2/3 , 2/3 ,1/3`

B

`2/3 ,- 2/3 ,1/3`

C

`2/3 , -2/3 , 11/3`

D

`-2/3 , 2/3 , -1/3`

HINT


Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)

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