The complete graph of the parametric equations , is the circle of radius 2 centered at
Chapter 6, Problem 6.1.1.204(choose chapter or problem)
The complete graph of the parametric equations x=2cos t, y=2sin t is the circle of radius 2 centered at the origin. Find an interval of values for t so that the graph is the given portion of the circle.
(a) The portion in the first quadrant
(b) The portion above the x-axis
(c) The portion to the left of the y-axis
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