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2 December, 08:53

A landscaper is making a retaining wall to shore up the side of a hill. To ensure against collapse, the wall should make an angle 75° with the ground.

If the wall is 25 feet, what is the height of the hill?

Question options:

25.9 ft

6.5 ft

24.1 ft

93.3 ft

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Answers (1)
  1. 2 December, 08:58
    0
    C. 24.1 ft

    Step-by-step explanation:

    The side of the wall making the tilt of 75° will represent the hypotenuse

    The height of the wall will be represented by the side opposite to the angle 75°

    Apply the relationship for sine of angle Ф

    Formula to use is;

    Sin Ф = length of opposite side:hypotenuse

    SinФ=O/H

    Sin 75°=O/25

    0.96592582628=O/25

    O=0.96592582628*25 = 24.1 ft
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