title: How to use Math.cos() & Math.sin()?
body: <p>I'm using <code>Math.cos</code> and <code>Math.sin</code> but it returns me unexpected results like these:</p>
  
  <pre><code> Angle   Sin      Cos
   354     0.8414  -0.5403
   352     0.1411   0.98998
   350    -0.958   -0.2836
  </code></pre>
  
  <p>Why I get these results?</p>