> Parse Error: Expected 'numberic expression', undeclared identifier
'vangle'
> found instead

Capitalization matters: try VAngle. (Or VAngleD if you're expecting degrees
instead of radians.)

> and something about vangle..
>
> let's say if i put vangle (v1,v2) = 60
>
> then will vangle (v2,v1) = 300?
> or -60?

No, they'll both return 60. In 3D space, the angle between two vectors is
always between 0 and 180.

 - Slime
 [ http://www.slimeland.com/ ]

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