The angle of elevation of a ladder leaning against a wall is 60� and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is: A. 2.3 m B. 4.6 m C. 7.8 m D. 9.2 m Answer Workspace Report Discuss Answer with explanation Answer: Option D Explanation cos 60 = 4.6/X where X is the length of the ladder X = 4.6/cos 60 = 4.6 divided by 1/2 = 9.2 I checked the answer as follows: By pythagorean theorem, the ladder is 7.967433… feet off the ground. Sin 60 = 7.967433/9.2 9.2 Workspace
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