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physics

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the angle of elevation to the tower is 30 degree and then moved towards the tower of a distance 20m.now thw angle of elevation is 60 degree.What is the height of the tower??plz help me:)

  • physics -

    Assume you start a distance x from the tower of height y.

    y = x tan(30°)
    y = (x-20) tan(60°)

    Solve for y.

  • physics -

    4.9m

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