The acute angle between the planes `2x-y+z=5 and x+y +2z =7` is

The acute angle between the planes 2x-y+z=6 and x+y+2z=3 is

The acute angle between the planes 2x-y+z=6\ a n d\ x+y+2z=3 is 45^0\ b. 60^0 c. 30^0 d. 75^0

The angle between the planes x + y = 0 and y - z = 1 is

Find the angle between the planes 2x - y + 3z = 6 and x + y +2z =7 .

Find the angle between the planes 2x - y + 3z = 6 and x + y +2z =7 .

Find the angle between the plane: 2x-y+z=6 and x+y+2z=7

Find the angle between the plane: 2x+y-2z=5 and 3x-6y-2z=7

Find the angle between the planes x-y+2z=9 and 2x+y+z=7 .

Find the angle between the planes -x+y+2z=9 and x+2y+z=5

Show that the origin lies in the interior of the acute angle between planes x + 2y + 2z = 9 and 4x - 3y + 12z + 13 = 0. Find the equation of bisector of the acute angle.