1.A 13 ft ladder is leaning against a house when he base starts to side away. By the time the base is 12 ft away from the house, the base is moving at the rate of 5ft/sec.
A. How fast is the top of the ladder sliding down the wall then?
B. At what rate is the area of the triangle is formed by the ladder and the ground changing then?
C. At what rate the angle & between the ladder and the ground changing then?
D.At what rate the angle a between the ladder and the wall changing then?
