polar coordinates

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A coordinate system in a plane in which the position of a point P is specified by the distance r=OP, where O is a fixed point (the pole), and the angle θ between OP and a fixed line through O (the initial line). The polar coordinates are given as (r, θ), where r≥0, and −180°<θ≤180° or 0°≤θ<360°. Referred to Cartesian coordinates Oxy, with Ox along the initial line, Cartesian and polar coordinates are related by

Subjects: Mathematics.

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