Multiple Choice Questions on Find the angle of elevation of the sun when the shadow of a pole of 18 m height is 6 radic 3m long ........ for Mathematics - All Exams Preparation

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Multiple Choice Questions

Find the angle of elevation of the sun when the shadow of a pole of 18 m height is 6 radic 3m long ........

Quantitative Aptitude ( CCS) Trignometry
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    Find the angle of elevation of the sun when the shadow of a pole of 18 m height is 6√3m long?

    30

    Incorrect Answer

    45

    Incorrect Answer

    60

    Correct Answer

    90

    Incorrect Answer
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    Explanation:


    Let RQ be the pole and PQ be the shadow 
    Given that RQ = 18 m and PQ=6√3m
    Let the angle of elevation, angleRPQ = θ 
    From the right  PQR, 
    tanθ=RQ/PQ=18/6√3=3/√3=√3
    ⇒θ=1/tan(√3)=60°

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