Question

An 18-foot ladder is leaning against the side of a building forming a right triangle. The angle formed by the ladder and the ground is 60°. Which is closest to the distance, in feet, of the bottom of the ladder from the base of the wall?

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A. 12. 7

B. 10. 4

C. 15. 6

D. 9

Answer 1

D. 9

Explanation:

The figure is not shown--please sketch it to confirm my answer.

In a 30°-60°-90° right triangle, the length of the shorter leg is one-half the length of the hypotenuse, and the length of the longer leg is √3 times the length of the shorter leg.