GraphingCalculator 3.2; Window 48 132 749 767; PaneDivider 117; BackgroundColor 0 0 0; BackgroundType 0; Slider 0 6.28; SliderSteps 400; SliderControlValue 24; SliderMoving 1; SliderThrottle 65; SliderOneDirection 1; 3D.Axes 0; 3D.View 0.314823339815888 -0.93156054001794 -0.181882448270624 0.821005123762765 0.363428548497668 -0.440307025713225 0.476273924819168 -0.0107074935732598 0.879231765872187; 3D.Rotation 1 0 0 0 1 0 0 0 1; Text "The slider below controls the rotation of one of the blue vectors. The red vector is the cross product of the two blue vectors. (The value of n on the slider is the angle between the vectors in radians.) When is the magnitude of the cross product largest? Smallest? When does the cross product point downward? "; Expr O=vector(0,0,0),A=vector(1,1,0),B=vector([cos([n+pi/4])]*sqrt(2),[sin([[n+pi/4]])]*sqrt(2),0); Color 5; Expr O,B; Color 5; Expr O,A; Color 2; Expr O,cross(A,B);