Question

A 20 foot ladder is lean against a building. The foot of the ladder is 6 feet from the building. Find the

angle the ladder makes with the building.

Answer 1

cos(theta) = adjacent/hypotenuse

cos(theta) = 6/20
cos(theta) = 0.3

Use the inverse cos or cos^-1 on your calculator to get the angle

theta = 72.5