polar coordinate
Noun
Meaning
either of two values that locate a point on a plane by its distance from a fixed pole and its angle from a fixed line passing through the pole
Source: WordNetHypernyms
Examples
Although the polar coordinate system moves with the particle, the observer does not.
Click here for more information. main Points in the polar coordinate system with pole O and polar axis L. In green, the point with radial coordinate 3 and angular coordinate 60 degrees or (3,60°).
Because of the circular nature of the polar coordinate system, many curves can be described by a rather simple polar equation, whereas their Cartesian form is much more intricate.
Examples include the polar coordinate system on Euclidean plane, the second important plane coordinate system.
Systems with a radial force are also good candidates for the use of the polar coordinate system.