1.

The unit vector in the direction of bar(x)=(-2,1,-2) is …………..

Answer»

`((2)/(3),-(1)/(3),(2)/(3))`
`(-(2)/(3),(1)/(3),-(2)/(3))`
`(-(2)/(9),(1)/(9),-(2)/(9))`
`((2)/(9),-(1)/(9),(2)/(9))`

ANSWER :B


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