4-d "surface theta" test

Topic:Addition, Algebra, Angles, Calculus, Circle, Complex Numbers, Cosine, Curve Sketching, Distributions, Geometry, Parametric Curves, Plane Figures or Shapes, Planes, Pythagoras or Pythagorean Theorem, Random Experiments, Ratios, Reflection, Set Theory, Sine, Sphere, Symmetry, Volume