A line passes through the points (6,-...

A line passes through the points `(6,-7,-1)a n d(2,-3,1)dot` Find te direction cosines off the line if the line makes an acute angle with the positive direction of the x-axis.

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`

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The correct Answer is:

A

NA

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