A ladder is leaning against a building. The ladder forms an angle of 80° with the ground. The distance from the base of the ladder to the base of the building is 5 feet.

Answer 1

the ladder length = 5sec80 = 5/cos80 = about 28.8 feet

the height of the the ladder from its top to the base of the building is 5tan80 = about 28.4 feet