ActionScript 2.0 :: Scripting 3D In Flash?

I'm going to have a bunch of questions as I progress through the tutorial.http:[url]....At the bottom of the page, sen writes this:Finally the function to make it all happen.This will base camera movement off of the arrow keys and use

clip._x += Math.cos(angle)*radius;
clip._y += Math.sin(angle)*radius;However in his code he writes this:cameraView.x += Math.sin(cameraView.rotation)*movement;
cameraView.z += Math.cos(cameraView.rotation)*movement;what happens is he switches the sin and cos methods from what he said. However, for displaying all the "figures" those far and including this example, cos was used for "x" and sin was used for "y" like so:
var x = Math.cos(angle)*this.radius;
var z = Math.sin(angle)*this.radius;