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Copie de Graphing Sine and Cosine using the Unit Circle

Choose a graph to trace: Sine, Cosine, or both Click on Start Animation to begin or stop the trace. You may also drag the orange point around the circle to manually trace the curves.
Given y = sin(x), each point on the curve is given by (x, sin(x)). Each point on the curve y = cos(x) is given by (x,cos(x)). Investigation: Graph both y = sin(x) and y = cos(x) simultaneously. How is the graph of y = sin(x) related to the graph of y = cos(x)? This is a modification of the GeoGebra applet created by Winzeler_BASIS.