suplementary units are dimendionless and are not derived from other (base) units while derived units are derived from base units and they do have dimionsions.
derived units
In a system of units such as the SI, BASE UNITS are defined; other units are derived from those.For example, in the SI, the meter, the kilogram, and the second are base units; the units for area (meters squared), for speed and velocity (meters/second), etc. are derived from the base units. Which units are base units, and which units are derived units, really depends on how the unit is defined. For example, in the SI, pressure is a derived unit; but you can just as well invent a system in which pressure is a base unit, and some other units, that are base units in the SI, are derived in this new system.
The fundamental units are based on specific standards for each unit. Derived units result from manipulating the fundamental units. For example, the SI unit for distance or length is the meter, and the SI unit for time is the second. If you divide meters by seconds, you get m/s, a derived unit for speed or velocity.
A derived unit in the International System of Units (SI) is a unit derived from the base units through multiplication, division, or exponentiation. These derived units are obtained by combining base units with a specific mathematical formula to represent complex physical quantities.
Derived units are simply more complex because they are made up of several (that is, usually, by more than one) base unit. It is just the way they are defined; for example, in the SI, distance and time are base units, while speed is a derived unit (distance / time). You can just as well invent a system of units where - for example - time and speed are base units; in this case, distance would be a derived unit.
The supplementary units are the radian and steradian units. This SI classification was made in 1995 but was later abandoned and the units were regrouped as derived units.
these SI units are not classified in derived and base units,and these some units seprated and named as suplementry units.It contains two units 1}Radian 2}Steredian
Supplementary units in the SI system are used to measure solid angles and angles. The supplementary unit for solid angles is the steradian (symbol: sr), which measures how much of the space a three-dimensional object occupies. The supplementary unit for angles is the radian (symbol: rad), which measures the angle subtended by an arc of a circle that is equal in length to the radius of the circle.
The quantity which has only direction is called fundamental quantity.Example-Direct current.The quantity which has both magnitude and direction is called derived quantity.Example-Altranating current.
derived units come from basic units such as length, time, electrical current.AnswerIn SI, Derived Units are any units that are not Base Units. There are seven Base Units, from which all Derived Units are formed. For example, a coulomb (derived unit) is equal to an ampere second (both Base Units).
Those are called derived units.
Because they are based on - i.e. "derived from" - other units.
derived units
Derived units is obtained from a combination of fundamental units. Derived unit is a cubic centimeter or a cube that is a centimeter on each side.
the differentiate between fundamental quantity and derived quantity?
base units
Derived units