The magnitude of a (*) cross-product is proportional to this function of the angle between the vectors.
Wavefunctions of the particle in a box use this function because it can be made to meet the boundary conditions. The Gibbs phenomenon occurs in a method that approximates any function using this function and its derivative, which is called a Fourier (FOR-ee-ay) series. The magnitude of a (*) cross-product is proportional to this function of the angle between the vectors. This function's law is the equality, for a triangle, of each side's ratio to this function of the side's angle. Its reciprocal is the cosecant. For 10 points, name this function, equal in trigonometry to the ratio of the opposite side to the hypotenuse.
Wavefunctions of the particle in a box use this function because it can be made to meet the boundary conditions.
{sine}