Find the angle between the plane:`7x+5y+6z+30=0 and 3x-y-10z+4=0`

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

In the following cases, determine whether the given planes are parallel or perpendicular, and in case they are neither, find the angles between them.(a) 7x+5y+6z+30=0 and 3x-y-10 z+4=0 (b) 2x+y+3z-2=0 and x-2y+5z=0 (c) 2x-2y+4z+5=0 and 3x-3y+6z-1=0 (d) 2x-y+3z-1=0and 2x-y+3z+3=0 (e) 4x+8y+z-3=0and y+z-4=0

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

Find the angle between the planes 2x+y+z-1=0 and 3x+y+2z-2=0 ,

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

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

Find the angle between the plane: x-y+z=5\ a n d\ x+2y+z=9

Find the angle between two planes 2x+y-5z=0 and 4x -3y+7z=0

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 .