A 21-foot ladder is leaning against a building. The base of the ladder is 7 feet from the base of the building. To the nearest degree, what is the measure of the angle that the ladder makes with the ground? (Hint: Sketch the problem before solving.)
3 answers
Have you sketched the problem?
Yes.
In that case, review your basic trig functions.
cos(x) = 7/21
Now just find x, with that value for cosine.
cos(x) = 7/21
Now just find x, with that value for cosine.
1 answer