Question

give the parameterizations of the unit circle or a part of it. Describe in words how the circle is traced out.
x=cos(t) , y=-sin(t) give the parameterizations of the unit circle or a part of it. Describe in words how the circle is traced out.
x=cos(t) , y=-sin(t) @Mathematics

Answer 1

What sort of parameterizations do u want? its a circle with center (0,0) and radius 1

Answer 2

the question ust says give the parameterizations.

Answer 3

dont know what you need... check this out http://mathnow.wordpress.com/2009/11/06/a-rational-parameterization-of-the-unit-circle/

Answer 4

If you begin with t=0, your starting (x,y) is (1,0). Now as t increases, x decreases and y becomes more negative. In pictures:

we are describing a circle, so I would say we are tracing out in a clockwise direction a unit radius circle.