Let L be the line of intersection of the planes 2 x+3 y+z=1 and x+3 y+2 z=2. If L makes an angle \alpha with the positive x-axis, then \cos \alpha equals [AIEEE 2007]

AIEEE 2007 Solved Paper

Section: Mathematics

Question : 114 of 118

Marks: +1, -0

Let L be the line of intersection of the planes 2x+3y+z=1 and x+3y+2z=2. If L makes an angle α with the positive x-axis, then cos‌α equals

[AIEEE 2007]

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