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polar coordinates
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Polar Coordinates
In mathematics, a way of defining the position of a point in terms of its distance r from a fixed point (the origin) and its angle θ to a fixed line or axis. The coordinates of the point are (r,θ).
Often the angle is measured in radians, rather than degrees. The system is useful for defining positions on a plane in programming the operations of, for example, computer-controlled cloth- and metal-cutting machines.
© Research Machines plc 2008. All rights reserved. Helicon Publishing is a division of Research Machines plc.
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