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GeoGebraGeoGebra Classroom

Wrapping Function

Move t on line L to see the wrapping function W(t). Each real number t on line L corresponds to a point W(t) on the unit circle C. The point is found by wrapping L about C without slipping or stretching. The coordinates of W(t) are (cos(t), sin(t)). This is the definition of cosine and sine.