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The recommended angle for a firefighting ladder is 75 degrees. When a 110-foot ladder is put up against a building at this angle, the base of the ladder is about 28 feet from the building. The base of the ladder is 8 feet above the ground. How high on the building will the ladder reach?

 Feb 9, 2020
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right triangle      ladder is hypotenuse (110 ft)    one leg is 28 ft   the other  is the height

 

28^2 + x^2 = 110^2      x = height from truck = 106.38 ft

    you must add the eight feet off of the ground to this       114.38 ft

 Feb 9, 2020

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