Degrees are the usual measure when starting angles, but when calculus is done, radians are used.
The US also had Gradians, but I've not noticed them used anywhere.
A full turn is:
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Radian = (180/pi)o
Degrees of a full circle of 360 degrees.
the unit of length used in measuring long objects are yards and feet and inches.
unit in earth science used for measuring angles in a circle or sphere?
SI unit for angle: radians. Popular unit: degree. SI unit for temprature: Kelvin. Popular unit: Centigrade. In a few countries, also the Fahrenheit.