Alexandra needs to reshingle the roof. she leans the ladder against the wall of the house so that the top of the latter is 8 feet above the ground the bottom of the latter is 5 feet from the base of the wall. find the angle formed between the ladder and the house.

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.