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Math Help - Simplifying trigonometric expressions

  1. #16
    Junior Member
    Joined
    Dec 2007
    Posts
    59
    Ok so:

    sin^3 \theta - cos^3 \theta
    ------------------
    sin^2 \theta - cos^2 \theta

    =

    sin^2 \theta-sin \thetacos \theta + cos^2 \theta
    --------------------------
    sin \theta + cos \theta

    =

    1+sin \thetacos \theta
    ----------------
    sin \theta + cos \theta

    EDIT: Sorry! I realised i factorised it wrong! But the book still says it's wrong! Don't worry though, I think the book is wrong, thanks for te enormous help!
    Last edited by Stevo_Evo_22; July 8th 2008 at 06:35 PM. Reason: Factorised wrong
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