In this video I go over an example on determining the derivative of a vector function and then calculating its unit tangent vector when the parameter t = 0. The unit tangent vector is the ratio of the derivative to its length, and describes the direction of the derivative but with a length of 1 unit. https://youtu.be/12cVK1PKMwA #math #science #calculus #vectors #UnitVector https://www.minds.com/newsfeed/1818008289187729408