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    Question

    A ladder makes an angle of 60┬░ with the ground when

    placed against of the ladder is 5 m away from the wall, find the length of the ladder.
    A 9тИЪ2 m Correct Answer Incorrect Answer
    B 8тИЪ3 m Correct Answer Incorrect Answer
    C 8.6 m Correct Answer Incorrect Answer
    D 10 m Correct Answer Incorrect Answer

    Solution

    Let the length of the ladder = L m

    The ladder makes an angle of 60┬░ with the ground and the distance of the foot of the ladder from the wall = 5 m.

    Using trigonometric relation: cos┬а 60┬░ = Base/Hypotenuse

    1/2 = 5/L

    L = 10┬а

    Hence, the length of the ladder = 10 m.

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