GraphingCalculator 3.2;
Window 48 140 757 814;
PaneDivider 168;
BackgroundColor 0 0 0;
BackgroundType 0;
FontSizes 12 11 10;
3D.View 0.72075525771516 -0.554390786931583 -0.416128242061686 0.480116505106797 0.832256484123372 -0.277195393465791 0.5 0 0.866025403784439;
3D.Rotation 1 0 0 0 1 0 0 0 1;
Text "<size=13>The equation in spherical coordinates below contains two constants, <I>a </I>and <I>b</I>, that can be varied with the sliders. (r is used here in place of rho.) 
Use the mouse to rotate the surface in any direction.";
Color 13;
Expr r=sin([a*theta])+cos([b*phi]);
Color 2;
MathPaneSlider 120;
Expr a=slider([0,8]);
Color 3;
Expr b=slider([0,4]);