Multiple Choice Questions on A tower standing on a horizontal plane makes an angle alpha at a point which is 160m apart from the ........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A tower standing on a horizontal plane makes an angle alpha at a point which is 160m apart from the ...........

Quantitative Aptitude ( CCS) Trignometry
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    A tower standing on a horizontal plane makes an angle α at a point which is 160m apart from the foot of the tower. On moving 100m towards the base of the tower, the angle of elevation becomes 2α. Find the height of the tower.

    100m

    Incorrect Answer

    80m

    Correct Answer

    120m

    Incorrect Answer

    90m

    Incorrect Answer
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    Explanation:

    Let AB be the tower of height x m.
    Let ∠BCA = α and ∠BDA = 2α such that CD = 100m and AD = 60m

    By: Amit Kumar
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