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Consider the lines L (1) : (x +1)/( 3) =...

Consider the lines `L _(1) : (x +1)/( 3) = (y+2)/(1) = (z+1)/(2), L_(2): (x-2)/(1) = (y+2)/(2) = (z-3)/(3)`
The unit vector perpendicular to both `L _(1) and L _(2)` is

A

`(-hati + 7 hatj + 7 hatk)/(sqrt99)`

B

`(- hati - 7 hatj + 5 hatk)/(5sqrt3)`

C

`(- hati + 7 hatj + 5 hatk)/(5sqrt3)`

D

`(7 hati - 7 hatj - hatk)/(sqrt99)`

Text Solution

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The correct Answer is:
B
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