Category:Definitions/Polar Subtangents

This category contains definitions related to Polar Subtangents.
Related results can be found in Category:Polar Subtangents.

Let $\CC$ be a curve embedded in a polar plane.

Let $\PP$ be a given point on $\CC$.

Let $\RR$ be the straight line through the pole $O$ perpendicular to the radius vector of $\PP$.

The polar subtangent of $\PP$ with respect to $\CC$ is the projection of the polar tangent of $\PP$ with respect to $\CC$ onto $\RR$.