Components of a Vector
University of Louisville Physics and Astronomy Module Project
MIT License Copyright (c) 2017 John Kielkopf and Aaron Hill
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Change the vector with its control menu.

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Explanation

A vector in three dimensions is described by its components on the x, y and z axes.
It is also described by its length, and the angles θ and φ.

θ is measured out of the xy-plane with the angle increasing toward the +z-axis.
φ is measured in the xy-plane from the +x-axis with the angle increasing toward the +y-axis.