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3D Geometry question

2007 · Shift 0 · Q62

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PYQ Library
JEE Main
Mathematics
3D Geometry
2007 · Shift 0 · Q62

3D Geometry question

2007 · Shift 0 · Q62

JEE MainMathematics3D GeometryMCQ+4 / −1

Let

L

be the line of intersection of the planes

2x+3y+z=1

and

x+3y+2z=2.

If

L

makes an angle

\alpha

with the positive

x

-axis, then cos

\alpha

equals

A
$1$
B
${1 \over {\sqrt 2 }}$
C
${1 \over {\sqrt 3 }}$
D
${1 \over 2}$

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