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C3 HELP

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    Can anyone help me out on the 7th question of the june 2007 c3 paper, its part (a) thats confusing... plz help is much appreciated.:confused::eek:
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    (Original post by Harshana12)
    Can anyone help me out on the 7th question of the june 2007 c3 paper, its part (a) thats confusing... plz help is much appreciated.:confused::eek:
    No body can help unless you tell which board are you on.

    Also give the link to the paper.
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    http://www.scribd.com/rainman875/d/1...question-paper


    this is the link
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    Hey! I have C3 this morning also, going to be fun!

    Anyway, what you want to do is to first of all combine the two fractions...

    This leaves you with sin^2+cos^2 on the top (which equals one) and sin x cos on the bottom. Do you know your identites sunny Jim? 2sinxcosx = sin2x

    Sub that in and you are left with 1/0.5sin2x, which of course equals 2/sin2x = 2cosec2x
    QED

    Good luck today
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    How was the paper?, for me it was kind of easy but im not sure about that proving sec^2x question.THNX for the answer btw
  6. Offline

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    (Original post by Harshana12)
    How was the paper?, for me it was kind of easy but im not sure about that proving sec^2x question.THNX for the answer btw
    The paper discussion and its solutions are on this thread.

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