Question

find the radius of curvature at any point (r,ø) of the curve r^(n)=a^(n)cosnø​

Answer 1

Answer:

The radius of curvature of a curve at a point M(x,y) is called the inverse of the curvature K of the curve at this point: R=1K. Hence for plane curves given by the explicit equation y=f(x), the radius of curvature at a point M(x,y) is given by the following expression: R=[1+(y′(x))2]32|y′′(x)|.