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Numerade Educator



Problem 48 Easy Difficulty

Show that the curvature of a plane curve is $\kappa=|d \phi / d s|,$
where $\phi$ is the angle between $T$ and $\mathbf{i} ;$ that is, $\phi$ is the
angle of inclination of the tangent line.


k=\frac{d \phi}{d s}


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Video Transcript

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