title: Sin and Cos function incorrect in python
body: <p>I am trying to make a top down shooter in pygame. I when I added the code to make the player move in the direction they are facing. The player would move in weird directions. This is the code I am using:</p>
  
  <pre><code>        if pygame.key.get_pressed()[K_UP]:
              playerX = playerX - math.cos(playerFacing)
              playerY = playerY - math.sin(playerFacing)
          if pygame.key.get_pressed()[K_DOWN]:
              playerX = playerX + math.cos(playerFacing)
              playerY = playerY + math.sin(playerFacing)
  </code></pre>
  
  <p>I tried just typing in math.cos(90) and it equaled -0.299515394756 but my calculator is telling me it equals 0. I am probably just making a stupid mistake, but can anyone tell me what I am doing wrong.
  Thanks
  Xeno </p>