The angle of elevation of a ladder leaning against a wall is 60 degrees and the foot of the ladder is 4.6 m away from the wall. The length of the ladder is ___ m
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Answer:
cos 60°= BC/AB
cos 60°= BC/AB1/2=4.6/AB
cos 60°= BC/AB1/2=4.6/ABAB=4.6×2
cos 60°= BC/AB1/2=4.6/ABAB=4.6×2AB=9.2m
cos 60°= BC/AB1/2=4.6/ABAB=4.6×2AB=9.2mlength of ladder is 9.2m.
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