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3 March, 23:10

A ladder leans against a building. The angle of elevation of the ladder is 70. The top of the ladder is 25ft from the ground. To the nearest tenth of a foot, how long is the ladder?

A. 7.7ft

B. 24.7 ft

C. 8.6 ft

D. 51 ft

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  1. 4 March, 01:47
    0
    Use the sin ratio to find the length of the ladder which is also our hypotenuse of the right triangle. sin70=25/x. Solving for x gives you x = 25/sin70. Do that on your calculator in degree mode to find that x = 26.6
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