GraphingCalculator 3.5;
Window 44 12 892 1131;
PaneDivider 455;
Slider 0 12.566;
SliderSteps 50;
SliderControlValue 0;
T 0 13;
3D.X -2 3;
3D.Y -2 3;
3D.Z -1 13;
3D.View -0.1039828440283706 0.9945681349331775 -0.004668310950491358 -0.07931251033171122 -0.003613192492675246 0.9968432527476634 0.9914116671979798 0.1040248519315139 0.07925740550873769;
3D.Speed 0;
Text "** The Circular Functions: Sine and Cosine
Option**-**Click** on the play button. The point moves in a helix around the z axis. The axes with arrows are the x and y axes in their usual orientation. The z axis is pointing toward you, but slightly up and to the right.
**Drag** the z axis to point directly at you and you are looking straight down on the x-y plane. Observe the projection of the point on the x-y plane move around the unit circle.
**Drag** the z axis so that it's horizontal, pointing to the right. While the z axis stays in this new position:
**Drag** the x axis to point straight at you while the y axis points up. You will see the projection of the point moving along a sine curve in the y-z plane.
**Drag** the y axis to point straight at you while the x axis points up. You will see the projection of the point moving along a cosine curve in the x-z plane.";
Grain 0.4833333333333333;
Expr vector(x,y,z)=vector(cos([t]),sin([t]),t);
Color 3;
Grain 0.1333333333333333;
Expr vector(cos([n]),sin([n]),n);