Question

A 45 foot ladder is leaning against a building. The foot of the ladder is positioned 10 feet from the base of the building. Determine the angle at which the ladder meets the ground.

Answer 1

77.16 degrees

Explanation:

Use inverse cosine to solve the problem:

cos∅= (10/45)

cos^-1 = (10/45)

Use a calculator to solve:

∅ = 77.16 degrees