Question

Why do we have Complementary Fundamental Units?

Answer 1

Answer:

The fundamental units are the units of the fundamental quantities, as defined by the International System of Units. They are not dependent upon any other units, and all other units are derived from them. In the International System of Units, the fundamental units are: The meter (symbol: m), used to measure length.

Answer 2

Answer:

Complementary units are compulsory when the major is taken as a degree specific major. Complementary units are not normally required when the major is taken as a second major. Up to four complementary units may be specified, though many degree-specific majors have fewer and some prescribe none.