In this video, we learn about arc length in three-dimensional space. We learn about arc length as a parameter and work out how to parametrize the vector function of a curve using arc length.
11:44 - Example 1 - Parametrize a curve.
20:50 - Example 2 - Find unit tangent vector.
23:51 - Example 3 - Find arc length parameter (we use trig substitution and integration by parts).
