Sin / Cosine Curve
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The sine / cosine curve tool allows you to draw sine waves on any axis with user selectable amplitude, offset and cycle length.
To draw a sine / cosine curve, first draw the central axis in the same way you would draw a line. Then move the mouse off the line to a third point which determines the amplitude of the wave.
When a sine/cosine curve is selected, you have five control points which allow you to determine the shape of your curve.
The number of cycles can be changed to between quarter of a cycle and four cycles.