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26 January, 14:32

A 25-foot long ladder is propped against a wall at an angle of 18° with the wall. How high up the wall does the ladder

reach? Round the answer to the nearest tenth of a foot.

13.8 ft

23.8 ft

26.3 ft

80.9 ft

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Answers (1)
  1. 26 January, 14:33
    0
    23.8 ft

    Step-by-step explanation:

    Trigonometry:

    We already know the angle, adjacent side and hypotenuse.

    So the formula would be using the cosine ratio:

    cos18 = adjacent side over the hypotenuse aka (x/25)

    x = cos18 * 25

    = 23.8 ft
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