The projection of the line segment joini...

The projection of the line segment joining the points `A(-1,0,3)` and `B(2,5,1)` on the line whose direction ratios are proportional to 6,2,3 is

A

`10/7`

B

`22/7`

C

`18/7`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:

B

The direction cosines of the line whose direction ratios are proportional to 6,2,3 are `6/7,2/7,3/7`
`:.` Projection of AB on the given line
`=(2+1)xx6/7+(5-0)xx2/7xx(1-3)xx3/7=22/7`

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