Degree of arc °
About the Degree of arc
A degree is one 360th of a full turn. The number 360 traces to Babylonian astronomy and its base-60 number system. Degrees are divided into 60 arcminutes and each arcminute into 60 arcseconds, a convention still used in navigation and astronomy.
Related Units
Radian
rad1 rad = 1 m/m (dimensionless); 180°/π
A radian is the angle subtended at the centre of a circle by an arc equal in length to the radius, so a full turn is 2π...
Steradian
sr1 sr = 1 m²/m² (dimensionless)
The steradian is the solid angle that cuts out an area equal to the square of the radius on the surface of a sphere. A...
Litre
L1 L = 1 dm³ = 0.001 m³ (exact)
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Tonne
t1 t = 1000 kg (exact)
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