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 `cosalpha` equals

Let L.be the line of intersection of the planes 2x+3y+z=1 and x+3y+2z=2. If L makes an angles alphawith the positive x-axis, then cos alpha equals

Let L be the line of intersection of the planes 2x+3y+z=1a n dx+3y+2z=2. If L makes an angle alpha with the positive x-axis, then cosalpha equals a. 1/2 b. 1 c. 1/(sqrt(2)) d. 1/(sqrt(3))

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)/(sqrt(2)) d.(1)/(sqrt(3))

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

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, whith the positive x-axis, then cos alpha equals

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