What is the pitch angle, the roll angle, the azimuth angle of the magnetic compass

The azimuthal angle is 0 degrees north, space clockwise 360 degrees, 360 degrees and 0 is reclosing, East is 90, South is 180, West is 270, and north is 0 degrees (360).

The pitch angle is the dip angle, the angle of the pitching of the instrument (the angle between the pitch and the horizontal plane).

The rolling angle, as its name implies, is that the angle of the instrument rolling is not as good as the plane rolls over several circles in the air, and the angle is worse than the original angle.