Find the equations of the bisectors of the angles between the planes `2x-y+2z+3=0a n d3x-2y+6z+8=0` and specify the plane which bisects the acute angle and the plane which bisects the obtuse angle.

Find the equation of the bisector planes of the angles between the planes 2x-y+2z-19=0 and 4x-3y+12z+3=0 and specify the plane which bisects the acute angle and the planes which bisects the obtuse angle.

Find the equation of the planes bisecting the angles between planes 2x+y+2z=9 and 3x-4y+12z+13=0

What is the angle between the planes 2x-y-2z+1=0 and 3x-4y+5z-3=0 ?

The angle between the planes 3x-4y+5z=0 and 2x-y-cz=5 is

The angle between the planes 2x+y+z=3 , x-y+2z=5 is

Find the angle between the planes x+y+2z=9 adn 2x-y+z=15

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

The angle between the planes 2x-y+z=6 and x+y+2z=7 , is

Find the angle between the planes 2x-3y+6z=9 and xy plane