When a light ray hits a tilted mirror, the angle of reflection depends on the angle of incidence and the angle of the mirror surface. The angle of incidence is the angle between the incident ray (incoming ray of light) and the normal line, which is a line perpendicular to the surface of the mirror.
According to the law of reflection, the angle of incidence is equal to the angle of reflection. In other words, the incident ray and the reflected ray will be symmetric with respect to the normal line.
If the mirror is tilted or inclined at an angle, the normal line will also be tilted accordingly. In this case, the angle of incidence will be measured between the incident ray and the tilted normal line. The reflected ray will follow the law of reflection, being symmetric with respect to the tilted normal line.
Here's a simple example: Let's say the mirror is tilted at an angle of 30 degrees with respect to the vertical axis. If an incident ray approaches the mirror at an angle of 40 degrees with respect to the vertical axis, the angle of incidence would be 40 degrees (measured with respect to the tilted normal line). According to the law of reflection, the reflected ray will also be 40 degrees with respect to the tilted normal line.
It's important to note that the angles mentioned above are relative to the mirror surface and the normal line. The specific direction of the reflected ray will depend on the orientation and direction of the incident ray relative to the mirror.