title: Converting first derivative into degrees
body: <p>I have a very basic question. I am analyzing a movie. In the movie I am fitting a curve to define an object and computing the first derivative of a curve at it's starting point. The first derivative is changing in each frame. I want to measire the first derivative in the from of angle given in degrees or radians. Is there a faster way to do it in MATLAB. </p>
  
  <p>I know its a very simple question, but if someone can explain me the concept then that would be very helpful. Thanks</p>