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cylindrical coordinates
A coordinate system in which a point is located by its height z above a reference plane and the polar coordinates of its projection onto that plane, (r, θ). (r, θ, z) can be related to rectangular Cartesian coordinates by x = r cosθ, y = r sinθ, and z = z (where the original reference plane corresponds to the xy-plane).
Related entry
• polar coordinatesRelated category
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