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March 25, 2017

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The angle of elevation to the top of a very tall Building is found to be 7° from the ground at a distance of 1 mi from the base of the building. Using this information, find the height of the building.

  • trig - ,

    Draw yourself a picture

    Let building height = y
    Distance from observer to base = x
    = 1 mile = 5280 feet

    y/x = tan(7deg) = 0.12278
    y = 648.3 feet

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