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If a line has direction ratios 2,-1,-...

If a line has direction ratios 2,-1,-2 then what are its direction cosines ?

A

`(-1)/(3),(1)/(3),(2)/(3)`

B

`(1)/(3),(-2)/(3),(1)/(3)`

C

`(2)/(3),(-1)/(3),(-2)/(3)`

D

`(1)/(3),(2)/(3),(-2)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
C
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