A 21-ft ladder is leaning against a building. If the base of the ladder is 8 ft from the base of the building, what is the angle of elevation of the ladder? How high does the ladder reach?

Question

(a) (Round your answer to one decimal place.)

(b) (Round your answer to the nearest whole number.)

Answer 1

Draw nad label a diagram!

(a) cos θ = 8 / 21

(b) 21² = 8² + h²