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The angle between the lines whose dire...

The angle between the lines whose direction cosines satisfy the equations `l+m+n=""0` and `l^2=m^2+n^2` is

A

`(pi)/(4)`

B

`(pi)/(6)`

C

`(pi)/(2)`

D

`(pi)/(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
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MODERN PUBLICATION-THREE DIMENSIONAL GEOMETRY -COMPETITION FILE
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