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Math Help - Chords in a Circle

  1. #1
    Newbie Lemon's Avatar
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    Chords in a Circle

    Just a bit confused, I need to find x:


    If I were to add a y, then I could do this:
    y=1/2(122+32)

    y=1/2(154)

    y=77

    x=180-77

    x=103

    If not, is there another way to do it? My book did not cover this.

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  2. #2
    Forum Admin topsquark's Avatar
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    Quote Originally Posted by Lemon View Post
    Just a bit confused, I need to find x:


    If I were to add a y, then I could do this:
    y=1/2(122+32)

    y=1/2(154)

    y=77

    x=180-77

    x=103

    If not, is there another way to do it? My book did not cover this.

    Looks good to me.

    -Dan
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  3. #3
    Newbie Lemon's Avatar
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    Thanks

    Really? One of my friends said I couldn't do that. But I suppose if that's right than that's right. Thanks for confirming it.
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  4. #4
    Junior Member Pinsky's Avatar
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    Where did you get <br />
y=1/2(122+32)<br />
from?


    Just trying to recall geometry myself...
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  5. #5
    Bar0n janvdl's Avatar
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    What on earth...?
    Attached Thumbnails Attached Thumbnails Chords in a Circle-doublethanks.jpg  
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  6. #6
    Math Engineering Student
    Krizalid's Avatar
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    Yeah, yeah, how does one explain that ?
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  7. #7
    Junior Member Pinsky's Avatar
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    What does 122 stand for?
    Why isn't y 122? It's the number of degrees by that angle...
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  8. #8
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by Krizalid View Post
    Yeah, yeah, how does one explain that ?
    Lemon is ... a Hacker ?
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  9. #9
    Super Member
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    Quote Originally Posted by Pinsky View Post
    What does 122 stand for?
    Why isn't y 122? It's the number of degrees by that angle...
    Hi,

    I've attached a more or less exact drawing.
    Attached Thumbnails Attached Thumbnails Chords in a Circle-sehn_im_krs.gif  
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