1. The problem statement, all variables and given/known data Close call! A fast car barely misses a man by 3 meters, while traveling at 30 meters per second. The man's head is tracking the car. What's his head's angular speed when the car is 3 meters away? 2. Relevant equations Angular velocity = change in angle / change in time 3. The attempt at a solution I don't know which trig function to use on this one. When I draw a right triangle representing the car's position in relation to the man before or after the car's passing, one side of the triangle ends up having a speed (30 m/s), while the other has a distance (3m). I don't know how to reconcile the two. I want to use the tangent trig function, but it seems I should use the sine? Any help would be appreciated.