A 25ft ladder leans against a building. The ladder's base is 13.5 feet from the building. Find the angle of elevation, which the ladder makes with the ground.

Answer 1

Hi Arthur,

I don't want to just give you the answer, but I can give you guidance as to how to go about solving the question.

It might help to actually draw a picture of this scenario. If the building is a regular building (standing vertical) and the ground is regular (flat), the building meets the ground at a right angle. If the ladder in the question is leaning against the building, then think of the ladder as a segment joining the ground and the building, but at an angle.

Again, it might help to draw a picture. You'll see that you have a triangle being formed between the ground, building and ladder. From here, use Trigonometric formulas to find side lengths and angle measurements.

Thanks,

Brian