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    sdlinsey's Avatar
    sdlinsey Posts: 12, Reputation: 1
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    #1

    Apr 26, 2009, 02:13 PM
    Precal using angles
    A building 150 feet tall casts a 50 foot long shadow. If a person stands at the end of the shadow and looks up to the top of the building, what is the angle of the person's eyes to the top of the building (to the nearest hundredth
    Of a degree)? (Assume the person's eyes are 6 feet above ground level.)
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Apr 26, 2009, 02:27 PM

    Same problem as the previous one, right?



    The only difference is that you're six feet above the ground. So, draw a diagram. Note that you can subtract 6 feet from the 150 feet to get the length of the side opposite.
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    sdlinsey Posts: 12, Reputation: 1
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    #3

    Apr 26, 2009, 02:38 PM
    Quote Originally Posted by Perito View Post
    Same problem as the previous one, right?



    The only difference is that you're six feet above the ground. So, draw a diagram. Note that you can subtract 6 feet from the 150 feet to get the length of the side opposite.
    OK i drew the diagram
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    Perito Posts: 3,139, Reputation: 150
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    #4

    Apr 26, 2009, 02:42 PM

    What did you get for Theta?
    sdlinsey's Avatar
    sdlinsey Posts: 12, Reputation: 1
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    #5

    Apr 26, 2009, 02:47 PM
    Quote Originally Posted by Perito View Post
    What did you get for Theta?

    I got 2.88 but this is where I'm getting confused
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    Perito Posts: 3,139, Reputation: 150
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    #6

    Apr 26, 2009, 02:51 PM
    If



    you use the "arctan" function (angle whose tangent is) to get the result.

    ArcTan (or arctan) is the same as tan^(-1)



    I'm not sure how you get values for your arctan function, but it exists on most scientific calculators.
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    sdlinsey Posts: 12, Reputation: 1
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    #7

    Apr 26, 2009, 02:56 PM
    Quote Originally Posted by Perito View Post
    If



    you use the "arctan" function (angle whose tangent is) to get the result.

    ArcTan (or arctan) is the same as tan^(-1)



    I'm not sure how you get values for your arctan function, but it exists on most scientific calculators.
    o OK i forgot all about arctan thank you
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