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A line passes through the point (6, -7, ...

A line passes through the point `(6, -7, -1) and (2, -3, 1).` The direction cosines of the line so directed that the angle made by it with the positive direction of x-axis is acute, are

A

`2//3,-2//3,-1//3`

B

`2//3,2//3,-1//3`

C

`2//3,-2//3,1//3`

D

`2//3,2//3,1//3`

Text Solution

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The correct Answer is:
A
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MCGROW HILL PUBLICATION-THE DIMENSIONAL GEOMETRY -SOLVED EXAMPLES (LEVEL 1( SINGLE CORRECT ANSWER TYPE QUESTIONS))
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