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12 June, 19:18

A safety regulation states that the maximum angle of elevation for a rescue ladder is 72º. A fire department's longest

Ladder is 110 feet. What is the maximum safe rescue height?

110sin (72°) feet

110cos (729) feet

110

Sin (725 feet

110

feet

COS (725 feet

+2
Answers (1)
  1. 12 June, 22:47
    0
    110sin (72°) feet

    Step-by-step explanation:

    In the right triangle with the 110 ft ladder as the hypotenuse, the side opposite the 72° angle represents the maximum height the ladder will reach. The definition of the sine function tells you ...

    Sin = Opposite/Hypotenuse

    so the Opposite side will be ...

    ladder height = (110 ft) sin (72°)
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