31. :: : You use spherical coordinates or a related system, which is basically what you are describing. 32. For example, the equations in this article can be used to write Maxwell's equations in spherical coordinates . 33. In addition to the above measures, to calculate prayer times for a specific location we need its spherical coordinates . 34. That step is invalid in spherical coordinates , because subtracting vectors in spherical coordinates just does not work that way. 35. That step is invalid in spherical coordinates, because subtracting vectors in spherical coordinates just does not work that way. 36. Here, we have assumed a spherical coordinate system in which the-axis is aligned with the beam direction. 37. I will introduce a set of spherical coordinates and define a function F ( ?, ? ) on it. 38. Spherical coordinates as often used in " mathematics " : radial distance, azimuthal angle, and polar angle.39. In particular, it occurs when solving Laplace's equation ( and related partial differential equations ) in spherical coordinates . 40. I may be mistaken, but would you be trying to find the angle between two vectors given in spherical coordinates ?
