Question

0 A 21-toot ladder is placed against a vertical wall of a building, with the bottom of the ladder standing on leve ground 20 feet from the base of the building. How high up the wall does the ladder reach? The ladder reaches teet up the wall. (Round to the nearest nundeath.)

Answer 1

building: on 20 feet from the 21 fool ladder placed against the wall e vertical) of a And bottom of the ladder standing lowen ground base of the building This triangle which of sight- angle Here AOB is a triangle make a G 21 90° ? CAOB = B -20 feet 20 z 21 so according to the picture we have to find the perpendicular AO sa I OB= AB So by pythogosono theorem (40) ^+COB)*= (43) 120°= (20) => x 7.400 = 441 => x = 441-400 = 41 -> 2. t

di sy! x = 541 41 a 6-4031 fb Lo the laddles laddles reaches reaches [6.4031 the wall ap