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If P is (-1,1,2) , then direction cosine...

If P is `(-1,1,2)` , then direction cosines of line OP are

A

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

B

`(-1)/(sqrt(6)),1/(sqrt(6)),(2)/(sqrt(6))`

C

`1/(sqrt(6)),(-1)/(sqrt(6)),2/(sqrt(3))`

D

`-1,1,2`

Text Solution

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The correct Answer is:
B
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MARVEL PUBLICATION-THREE DIMENSIONAL GEOMETRY-MULTIPLE CHOICE QUESTIONS
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  12. If bar(a),bar(b),bar (c ) are pair wise mutually perpendicular vectors...

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