Distance of Two Points in Polar Coordinates
The distance d between two points P1 and P2 with polar coordinates (r1, θ1) and (r2, θ2) is given by the polar distance formula:
This formula is derived from the law of cosines, applied to the triangle P1OP2 in which two sides have lengths r1 and r2 and the included angle is θ1 − θ2.
Read more about this topic: Radial Distance (geometry)
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