If a line has direction ratios `2, − 1, − 2`, then what are its direction cosines?
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Q 1135380262.
If a line has direction ratios `2, − 1, − 2`, then what are its direction cosines?
A
`2/3, (-1)/3, (-2)/3`
B
`2/3, (-1)/3, -2`
C
`2, (-1)/3, (-2)/3`
D
`2/3, (1)/3, (-2)/3`
HINT
Solution
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)
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