title: Convert Magnetic North to True North
body: <p>I have got a question for you guys since it gets worst when you start missing tiny things from your hardware specs or your software APIs. </p>
  
  <p>I'm developing a Windows Store app that works with a compass and it is obvious that our current laptops (most of them) are not having any compass sensors built in. Therefore, it would only run on tablets like Surface RT etc. </p>
  
  <p>The problem is; I need to work with a true north and the compass Surface RT works / supports only magnetic north. I would like to know if anyone knows a way to convert magnetic north to true north by some mathematical calculations? </p>
  
  <p>Appreciate your answers.</p>
  
  <p>Thanks!</p>