2016-05-20
[public] 63.7K views, 765 likes, 12.0 dislikes audio only
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/multivariable-calculus/multivariable-derivatives/curvature/v/curvature-formula-part-3
Here, this concludes the explanation for how curvature is the derivative of a unit tangent vector with respect to length.