Rate of Ascent A hot air balloon is rising upward from the earth at a constant rate, as sh...

Rate of Ascent A hot air balloon is rising upward from the earth at a constant rate, as shown in the accompanying figure. An observer 250 meters away spots the balloon at an angle of elevation of 24°. Two minutes later the angle of elevation of the balloon is 58°. At what rate is the balloon ascending? Answer to the nearest tenth of a meter per second.