title: Double values division
body: <p>i have a problem with a division in c#, i got +infinity and -infity.
  I have this code :</p>
  
  <pre><code>double Sunrise = 0.0;
  double Sunset = 0.0;
  double Daylength = 0.0;
  Sunrise = 12 - Math.Acos(CosWo) / (15 / 360 * 2 * Math.PI);
  Sunset = 12 + Math.Acos(CosWo) / (15 / 360 * 2 * Math.PI);
  Daylength = 2 * Math.Acos(CosWo) / (15 / 360 * 2 * Math.PI);
  </code></pre>
  
  <p>When i print the result of sunset sunrise and daylength i got +infinity and -infity for their values, what should i do to fix this.</p>