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Math Help - Geometry homework, no idea what to do.

  1. #1
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    Geometry homework, no idea what to do.

    Hello, I am 16 and go to an online school. There are a few problems with this, namely that my teachers almost never talk to me and that my book is written terribly.

    I need some help with these questions and I need to show all the work. The problem is, I have no idea where to even begin. Could I get some help, not just getting the answers, but also actually understanding what I'm supposed to do here?
    Attached Thumbnails Attached Thumbnails Geometry homework, no idea what to do.-halp.jpg  
    Last edited by mr fantastic; May 13th 2010 at 08:03 PM. Reason: Amateur book reviews are not appropriate.
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  2. #2
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    geometry homework

    Quote Originally Posted by Blackjack View Post
    Hello, I am 16 and go to an online school. There are a few problems with this, namely that my teachers almost never talk to me and that my book is written terribly. To quote my brother who is studying physics my book was written by "A dyslexic autistic five year old". It's that bad.

    I need some help with these questions and I need to show all the work. The problem is, I have no idea where to even begin. Could I get some help, not just getting the answers, but also actually understanding what I'm supposed to do here?
    Hi blackjack

    Q1 Is QAP a diameter?
    Q2 The problem is clear.I am giving you answers but you need to understand why statements are made.

    Draw xy
    a is an angle.A is an arc.
    ax is 110 A WZY =220 A wxy=360-220=140
    aZ=1/2 of 140=70
    WZY is isosceles aYWZ=a WYZ=180-70/2=55
    aY=100 aXYW=100-55=45
    axwy=180-(110+45)=25
    aW=25+55=80
    AWZ =1/2of 220=110
    add all angles of the quad 110+80+70+100=360


    bjh
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  3. #3
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    Hello, Blackjack!

    I will assume that A is the center of the circle.


    Q1: Find the measure of \angle QMN.
    Code:
                  * * *
              *           *   M
            *               o
           *              *  *
                        *       70
          *           *       *
        Q o - - - - o - - - - o P
          *       * A         *
                *
           *  *              *
            o               *
          N   *           *
                  * * *

    Draw chord QM.

    MN and QP are diameters.

    . . \text{arc}(MP) \,=\,70^o \quad\Rightarrow\quad \angle MAP = 70^o

    . . \angle QAN = 70^o \quad\Rightarrow\quad \text{arc}(QN) = 70^o


    Therefore: . \angle QMN \:=\:\tfrac{1}{2}\text{arc}(QN) \:=\:\tfrac{1}{2}(70^o) \;=\;35^o

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  4. #4
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    Thanks for the help guys, also in response, all the information given to me is in that picture. If A is the center or not, no idea. They never told me.

    This is why I have trouble with this class, though I'm still getting a B+ or an A

    Also, all the steps need to be shown.

    I still have no idea how to simplify Cos tan and the like though, cannot find ANYTHING in the book about it.
    Last edited by Blackjack; May 18th 2010 at 11:03 AM.
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