An Azimuth is an angular measurement in spherical coordinates. The vector from an observer (origin) to a point of interest is projected perpendicularly onto a reference plane; the angle between the projected vector and a reference vector on the reference plane is called the azimuth.An example of an azimuth is the measurement of the position of a star in the sky. The star is the point of interest, the reference plane is the horizon or the surface of the sea, and the reference vector points north. The azimuth is the angle between the north point and the perpendicular projection of the star down onto the horizon.Azimuth is usually measured in degrees. The concept is used in many practical applications including navigation, astronomy, mapping, mining and artillery. The word azimuth is derived from the Arabic word as-simt, which means direction, referring to the ways or directions a person faces.

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