Final answer:
The angle measured clockwise from true north to the nose of the aircraft is called the azimuth angle. It is common to measure the azimuth angle counterclockwise from north, so the angle measured clockwise from true north is the opposite direction. This convention is used in surveying and navigation.
Step-by-step explanation:
The angle measured clockwise from true north to the nose (head) of the aircraft is called the azimuth angle. In surveyor-type measurements, the azimuth is usually measured counterclockwise from the northward direction, so the angle measured clockwise from true north would be the azimuth angle in the opposite direction.
For example, if the aircraft's nose is pointing east of north, the azimuth angle would be 90 degrees clockwise from true north. If the nose is pointing south of west, the azimuth angle would be 225 degrees clockwise from true north.
It is important to note that this convention is commonly used in surveying and navigation to specify the direction of an object or its movement.