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The unit vector perpendiculat to the lin...

The unit vector perpendiculat to the lines
`(x+1)/3=(y+2)/1=(z+1)/2"and"(x-2)/1=(y+2)/2=(z-3)/3` is

A

(a) `(-hati+7hatj+7hatk)/(sqrt(99))`

B

(b) `(-hati-7hatj+5hatk)/(5sqrt(3))`

C

(c) `(-hati+7hatj+5hatk)/(5sqrt(3))`

D

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

Text Solution

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The correct Answer is:
B
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