Hi,
this little scrap of code has been so useful to me that it ends up pasted into almost all my sketches.  Maybe it would be useful to other (beginning) programmers and could find a home in the API?
It just finds the X and Y coordinates a given distance and angle from a starting point.

float shiftX(float startX, float angle, float speed){
 return (startX + (speed * cos(angle)));
}

float shiftY(float startY, float angle, float speed) {
 return (startY + (speed * sin(angle)));
}

--Ben