Math 2.0

concept

Polar coordinates

Summary

Polar coordinates describe a point of the plane by two numbers. They are its distance rr from the origin and the angle θ\theta from the positive xx-axis to the ray through the point. They simplify problems with circular symmetry, such as integrals over discs.

Remarks

The polar form of a complex number is a related idea: see polar form.

What this node needs for W2
  • edge instance_of in: at least two examples (0 of 2)
  • edge not_instance_of in: at least one non-example (0 of 1)
  • edge specializes both: the more general notions and the special cases (0 of 1)

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Euclidean space, object, no evidence levelEuclidean spaceobjectPolar coordinates, concept, no evidence levelPolar coordinatesconcept
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  1. Euclidean space object
  2. Polar coordinates concept

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Sources

  1. Web https://en.wikipedia.org/wiki/Polar_coordinate_system, lead section
  2. Web https://en.wikipedia.org/wiki/Polar_coordinate_system, Converting between polar and Cartesian coordinates

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