JestionSheet E y X A 10 feet ladder leaning against a vertical wall at an angle 0 is sliding in such a way that the other end on the ground is moving away from the base of the wall at - feet/min. How fast is the angle 0 changing in radians/min when the end of the ladder on the ground is 4 feet from the wall? Enter your exact answer in the equation editor below. Click on > to launch the equation editor. sin (a) OO