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If the direction cosines of two lines a...

If the direction cosines of two lines are connected by the equations l+m+n=0 and `l^(2) + m^(2) -n^(2)=0`, then the angle between these lines is of measure

A

`pi/2`

B

`pi/3`

C

`pi/4`

D

`pi/6`

Text Solution

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The correct Answer is:
B
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MARVEL PUBLICATION-PLANE IN SPACE -PART B: MASTERING THE BEST ON LINE AND PLANE IN SPACE
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