I'm not sure exactly what this question is asking, but I will attempt to answer. An angle on the unit circle is created by drawing a straight line from the origin to a point on the circle. The...
If x2 + y2 = 1, then the point (x,y) is a point on the unit circle.
WHAT ARE THE TANGENTS OF ALL COORDINATES IN THE UNIT CIRCLE?
(0, 1) (1, 0) (0, -1) (-1, 0)
A unit circle is a circle with radius equal to one.