" The angle between the planes "4x+8y+z-8=0" and "y+z-4

Find the angle between the planes : 4x+8y+z=8 and y+z=4

Write the angle between the planes 3x -5y + 2z-8 = 0 and 2x + 4y + 7z + 16 = 0.

Find the angle between the planes x+2y+2z-5=0 and 3x+3y+2z-8=0

Find the angle between the planes x+2y+2z-5=0 and 3x+3y+2z-8=0

Find the angle between the planes x+2y+2z-5=0" and " 3x+3y+2z-8=0 .

Find the angle between the planes x+2y+2z-5=0 and 3x+3y+2z-8=0 .

In the following exercise determine whether the given planes are parallel or perpendicular and in case they are neither, find the angle between them. 4x+8y+z-8=0 " and " y+z-4=0