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Homework Help: Simplification Through Fundemental Identities

  1. Feb 3, 2010 #1
    1. The problem statement, all variables and given/known data
    (sin3+cos3)/(sin+cos)


    2. Relevant equations
    sin2+cos2=1
    1 +cot2=csc2
    1+tan2=sec2
    Are these sufficient?

    3. The attempt at a solution
    Confusion. Epic confusion. I might have had it yesterday, but the mathematical equivalent of a writers anti-tank roadblock. At best.

    Ahhhhhhh, thanks...
     
    Last edited: Feb 3, 2010
  2. jcsd
  3. Feb 3, 2010 #2

    Dick

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    Science Advisor
    Homework Helper

    a^3+b^3=(a+b)*(b^2-ab+a^2). It's a general algebraic identity. Word to the wise.
     
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