Asked by TeeKay

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.)
Answered by Ms. Sue
Have you sketched the problem?

Answered by TeeKay
Yes.
Answered by Steve
In that case, review your basic trig functions.

cos(x) = 7/21

Now just find x, with that value for cosine.
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