SI supplementary unit

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SI supplementary unit

Until 1995, SI

Si, si, or SI may refer to :...
(International System of Units) supplementary units were:

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Until 1995, SI

Si, si, or SI may refer to :...
(International System of Units) supplementary units were:

Quantity	Symbol	Name of SI supplementary unit	Symbol for SI unit
angle	?	radian Radian The radian is a unit of plane angle, equal to 180/pi Degree , or about 57.2958 degrees, or about 57?17'45?. It is the standard unit of angular measurement in all areas of mathematics beyond the elementary level....	rad
solid angle	O	steradian Steradian The steradian is the SI unit of solid angle. It is used to describe two-dimensional angular spans in three-dimensional space, analogous to the way in which the radian describes angles in a Plane ....	sr

As of October 1995, the category of "supplementary units" has been abolished from the SI system of measurement, and the radian and the steradian are now considered SI derived unit

SI derived unit

SI derived units are part of the SI system of measurement Units of measurements and are derived from the seven SI base units.Note that while the names of all SI units are in lowercase, the symbols of units named after people are written with an initial capital letter ....
s.

SI supplementary unit

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