Problema Solution
a ladder leans against a building. The top of the ladder reaches a point on the building which is 18 feet above the ground.The foot of the ladder is 7 feet from the building. Find the measure of the angle which the ladder makes with the level ground.
Answer provided by our tutors
make a good drawing and notice the right triangle with legs: 18 ft and 7 ft
let 'a' denote the angle which the ladder makes with the level ground
tan(a) = 18/7
a = arctan (18/7)
a = 68.75 degrees
the angle which the ladder makes with the level ground is 68.75 degrees.