(0, 1)
(1, 0)
(0, -1)
(-1, 0)
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All complex number that can be represented by the coordinates of points on the unit circle, that is, the circle with its centre at the origin and a radius of 1 unit.
If the radius is two. it won't be a unit circle, a unit circle is defined as a circle with radius one.
The unit circle is a circle with its center at the origin and a radius of ' 1 '.
A unit circle is a circle with radius equal to one.
A circle can have a unit of length which could be either a measure of its diameter or radius, or of its circumference. Or the circle could have the unit of area.