The angle between given planes

The angle between the planes passing through the points A(0,0,0),B(1,1,1),C(3,2,1)& the planes passing through

In a plane polarised electromagnetic wave, the angle between the planes of bivration and polarisation is

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

Assertion : If theta is the angle between the planes of transmission of two analysers then the intensity of emergent light is proportional to cos^@ theta . Reason : In the propagation of electromagnetic waves, the angle between the direction of propogation and plane of polarisation is pi/2 .

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

Angle between line and plane

Angle between two planes