The top of a 7 ft. ladder rests against the side of a wall. The foot of the ladder is 2.2 feet from the base of the wall. Assuming that the ground is level, what is the angle between the bottom of the ladder and the ground?
If you draw out a picture and visualize it, you will be able to see that you need to use inverse cosine to solve this. Plug in cos^-1 (2.2/7) and you will get 71.7 as your answer.
