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Let L be the line of intersection of the...

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

`1/2`

B

`1`

C

`1/sqrt2`

D

`1/sqrt3`

Text Solution

Verified by Experts

The correct Answer is:
D
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