# Radius Of Curvature In Parametric Form

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**Radius of Curvature in Parametric Form:**

Let x = f (t) and y = g (t) be the Parametric equations of a curve C and P ( x, y) be a given point on it. Then

Substituting the values of dy/dx and d^{2}y/dx^{2} in the Cartesian form of the radius of curvature of the curve y = f (x) in the above equations.

∴

This is the Cartesian form of the radius of curvature in the parametric form.