@Socks X should be cosine, and Y should be sine.
Technically yes, switching sin/cos is not a problem and it changes the direction. But if you teach people that way, then they learn incorrectly to associate x with sine and y with cosine. So when they use the angle of the actor where the coordinate system starts with 0 degrees at East going counter-clockwise, they'll ask why things don't work the same.
The best and easiest way to switch direction . . . .
Also I don't really associate X with sine and Y with cosine, I just see one as being out of phase or offset by 90°
. . . I'd like them to take what they learn in GameSalad into other aspects in life.