Polar or radial coordinates are part of a coordinate system where the location of any point P, (relative to the origin, O) is given by its |OP|, the distance of P from O and the angle made by OP with the positive direction of the horizontal line from O (the line going due East.
Apart from the case where the distance, r is 0, any pair of Polar coordinates can be mapped to a pair of Cartesian coordinates using:
x = r cos A
y = r sin A
and conversely,
r = |sqrt(x2 + y2)|
A = tan-1(y/x) if x not 0
0 when A = 0
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It means that the y-coordinate (or any coordinate other than the x-coordinate) is non-zero.
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A coordinate is a specific point on a plane, usually dictated by two sets of numbers.
In a coordinate system, it represents the distance from the origin in the positive direction of the x-axis.
Steel Radial Speed Rating