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If the direction ratios of a lines are p...

If the direction ratios of a lines are proportional to `1,-3,2` then its direction cosines are

A

`(1)/(sqrt(14)),(-3)/(sqrt(14)),(2)/(sqrt(14))`

B

`(1)/(sqrt(14)),(2)/(sqrt(14)),(3)/(sqrt(14))`

C

`(-1)/(sqrt(14)),(3)/(sqrt(14)),(-2)/(sqrt(14))`

D

`(-1)/(sqrt(14)),(-2)/(sqrt(14)),(-3)/(sqrt(14))`

Text Solution

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The correct Answer is:
A
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TARGET PUBLICATION-THREE DIMENSIONAL GEOMETRY -Competitive Thinking
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