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Math Help - PreCalculus Law Of Sines/Cosines Help

  1. #1
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    Exclamation PreCalculus Law Of Sines/Cosines Help



    My normal approach here is not working, can anyone help?
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    Re: PreCalculus Law Of Sines/Cosines Help

    Quote Originally Posted by ineedhelplz View Post


    My normal approach here is not working, can anyone help?
    angle between the sun ray and the hill = 30

    angle between the tree and the down side of the hill = 112

    angle between the top of the tree and the sun ray = 180 - (30+112) = 38

    hillside distance = 215

    use the law of sines to find tree height
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    Re: PreCalculus Law Of Sines/Cosines Help

    Thanks, but where did 112 come from? I don't see where you got that.
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    Re: PreCalculus Law Of Sines/Cosines Help

    Quote Originally Posted by ineedhelplz View Post
    Thanks, but where did 112 come from? I don't see where you got that.
    sketch a horizontal line that passes through the bottom of the tree ... what do you remember about alternate-interior angles?
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    Re: PreCalculus Law Of Sines/Cosines Help

    Like this?

    I'm not really sure what you mean.
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    Re: PreCalculus Law Of Sines/Cosines Help

    that's not a horizontal line ...
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