The direction cosines of the line joinin...

The direction cosines of the line joining the points (- 2, 1, 0) and (3, 2, 1) are,

A

`ltlt5,1,1gtgt`

B

`ltlt(5)/(3sqrt3),(1)/(3sqrt3),(1)/(3sqrt3)gtgt`

C

`ltlt(-5)/sqrt6, 1/sqrt6,1/sqrt6gtgt`

D

`ltlarr5,-1,-1gtgt`

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