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3D Geometry question

2014 · Shift 0 · Q44

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PYQ Library
JEE Main
Mathematics
3D Geometry
2014 · Shift 0 · Q44

3D Geometry question

2014 · Shift 0 · Q44

JEE MainMathematics3D GeometryMCQ+4 / −1

The angle between the lines whose direction cosines satisfy the equations

l+m+n=0

and

{l^2} = {m^2} + {n^2}

is :

A
${\pi \over 6}$
B
${\pi \over 2}$
C
${\pi \over 3}$
D
${\pi \over 4}$

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