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From a point `P` on the ground the angle of elevation of a 10m tall building is `30o` . A flag is hoisted at the top of the building and the angle of elevation of the top of the flag-staff from `P` is `45o` . Find the length of the flag-staff and the distance of the building from the point `P` . (Take `sqrt(3)=1. 732)` .

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From a point P on the ground the angle of elevation of the top of a 10 m tall building is 30^(@) . A flag is hoisted at the top of building and the angle of elevation of the top of the flagstaff from P is 45^(@) . Find the length of the flagstaff and the distance of the building from the point? (You may take sqrt3=1.732 )

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Knowledge Check

  • From a point P on the ground the angle of elevation of the top of a 10 m tall building is 30o . A flag is hoisted at the top of the building and the angle of elevation of the top of the flagstaff from P is 45o . Find the length of the flagstaff

    A
    `5.2`m
    B
    `8.32`m
    C
    `6.2`m
    D
    `7.32`m

  • From a point A on the ground, the angle of elevation of the top of a 20 m tall buiding is 45^@ . A flag is hoisted at the top of the building and the angle of elevation of the top of the flagstaff from A is 60^@ . Find the length of the flag staff and the distance of the building from the point A.

    A
    20 m , 15 m
    B
    20m, 14.64 m
    C
    25 m , 15m
    D
    20 m, 19m

  • From a point P on the ground the angle of elevation of the top of a 10 m tall building is 30^(@) . A flag is hoisted at the top of the building and the angle of elevation of the top of the flagstaff from P is 45^(@) . Find the length of the flagstaff . (Take sqrt(3)=1.732)

    A
    `10(sqrt(3)+2)`m
    B
    `10(sqrt(3)+1)`m
    C
    `10sqrt(3)` m
    D
    7.32 m

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