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Maths (O) P:1 TRIANGLES?!

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  • 06-06-2008 8:38pm
    #1
    laura*
    Registered Users Posts: 141 ✭✭


    Ok
    wtf was up with the triangle ques?
    UNCALLED FOR!

    I tried all the ques on the paper,
    only finished 3 full ques

    found some c's trickey!
    that was expected!


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    #2
    emmie-lou
    Registered Users Posts: 64 ✭✭emmie-lou


    yeh that part of the question came out of nowhere!! i used pythagoras theorem on it hopefully i got most of it right! the paper itself was easy enough :D


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    #3
    laura*
    Registered Users Posts: 141 ✭✭laura*


    emmie-lou wrote: »
    yeh that part of the question came out of nowhere!! i used pythagoras theorem on it hopefully i got most of it right! the paper itself was easy enough :D


    i honestly blanked when i see it!
    ya i think that was defos it!
    but i just was mad that it came up
    i've to teach myself all paper 2 at the w:end!

    DARN TEACHERS LETTING US IN ALL UNPREPARED

    honest i'm not finished a few of my courses!


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    #4
    Twee.
    Moderators, Recreation & Hobbies Moderators Posts: 9,722 Mod ✭✭✭✭Twee.


    I got 1 as the answer. Took me a while to cop it though. I'd even drawn the height line and didn't notice it made the right angle ha.


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    #5
    titan18
    Registered Users Posts: 12,005 ✭✭✭✭titan18


    I took a guess at 3x


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    #6
    rachelmcg1989
    Closed Accounts Posts: 47 ✭rachelmcg1989


    yeah that answer is 1. our supervisor told us, was so happy i got it right, cas 1 seemed like such a wrong answer since the other sides were x + 1 and all


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    #7
    Overheal
    Registered Users Posts: 83,539 ✭✭✭✭Overheal


    could you please post the question part C up so some of us college whiz kids can see what you are complaining about ¿

    :p


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    #8
    Fitzo
    Registered Users Posts: 396 ✭✭Fitzo


    (c)(ii):

    The lengths of the sides of an isoceles triangle are sq (x^2 +1), sq (x^2+1) and 2x. Taking 2x as the base, find the perpendicular height of the triangle.


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    #9
    Kazbah
    Registered Users Posts: 764 ✭✭✭Kazbah


    Yes the answer is 1.

    It's Pythagoras' theorum

    If you draw in the perpendicular bisector on a isosceles triangle you form two congruent right-angled triangles. You know two sides so you can find the third.


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    #10
    Twee.
    Moderators, Recreation & Hobbies Moderators Posts: 9,722 Mod ✭✭✭✭Twee.


    Haha that explanation is so neat. Mine was a bit all over the gaff but I got the right answer :)


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    #11
    Kazbah
    Registered Users Posts: 764 ✭✭✭Kazbah


    Not a Leaving Cert student but did out the paper today.
    So had it to hand!


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    #12
    Twee.
    Moderators, Recreation & Hobbies Moderators Posts: 9,722 Mod ✭✭✭✭Twee.


    Kazbah wrote: »
    Not a Leaving Cert student but did out the paper today.


    Fun evening eh :p ?


    I jest.


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    #13
    Kazbah
    Registered Users Posts: 764 ✭✭✭Kazbah


    Twee. wrote: »
    Fun evening eh :p ?


    I jest.

    Heehee lads enjoy the next few years it's all downhill after that!


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    #14
    Twee.
    Moderators, Recreation & Hobbies Moderators Posts: 9,722 Mod ✭✭✭✭Twee.


    Kazbah wrote: »
    Heehee lads enjoy the next few years it's all downhill after that!

    I know :( "Real" life. Actual jobs. Ah sh!te.


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    #15
    emmie-lou
    Registered Users Posts: 64 ✭✭emmie-lou


    woo i got 1 too!


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