3. A 10-foot ladder is placed against a building so that the ladder makes a 78° angle with the ground. To the nearest tenth of a foot, at what height does the ladder touch
the building?

You're locked out of your house. the only open window is on the second floor, 25 feet above the ground. there are bushes along the edge of the house, so you will need to place the ladder 10 feet from the house. what length ladder do you need to reach the window?