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Find the direction cosines of the line which is perpendicular to the lines with direction ratios `4, 1, 3 and 2, -3, 1`. a)`(1)/(sqrt(3)),(1)/(5sqrt(3)),(-7)/(5sqrt(3))` b)`(5)/(sqrt(3)),(1)/(sqrt(3)),(7)/(5)` c)`(2)/(sqrt(3)),(5)/(2sqrt(3)),(1)/(7sqrt(3))` d)`(1)/(sqrt(3)),(2)/(sqrt(3)),(-1)/(sqrt(3))`

A

`(1)/(sqrt(3)),(1)/(5sqrt(3)),(-7)/(5sqrt(3))`

B

`(5)/(sqrt(3)),(1)/(sqrt(3)),(7)/(5)`

C

`(2)/(sqrt(3)),(5)/(2sqrt(3)),(1)/(7sqrt(3))`

D

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

Text Solution

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The correct Answer is:
A
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