title: How do you retrieve the azimuth of an Android device?
body: <p><em>Azimuth</em> is defined by <a href="http://en.wikipedia.org/wiki/Azimuth" rel="nofollow"><em>Wikipedia</em></a> as:</p>
  
  <blockquote>
    <p>An angular measurement in a
    spherical coordinate system. The vector from an observer (origin) to a
    point of interest is projected perpendicularly onto a reference plane;
    the angle between the projected vector and a reference vector on the
    reference plane is called the azimuth.</p>
  </blockquote>
  
  <p>How can I get this value on Android?</p>