1. The problem statement, all variables and given/known data A spotlight on theground shines on a wall 12 m away. If a man 2m tall walks from the spotlight toward the building at a speed of 1.6m/s. how fast is the length of his shadow on the building decreasing when he is 4m from the building? 3. The attempt at a solution x=4m dx/dt=1.6m/s dy/dt=? I am kinda of stuck on this one. I know that as x decreases z and y will also decrease. But I am really not to sure how to proceed on this one any hints?