title: Direct way of computing clockwise angle between 2 vectors
body: <p>I want to find out the clockwise angle between 2 vectors(2D, 3D). </p>
  
  <p>The clasic way with the dot product gives me the inner angle(0-180 degrees) and I need to use some if statements to determine if the result is the angle I need or its complement. </p>
  
  <p>Do you know a direct way of computing clockwise angle?</p>