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Simplify equation

  1. Aug 15, 2011 #1
    Hi,

    I'm trying to simplify the following equation, but I'm not sure it can be! Can anybody help me please?

    [tex]
    \frac{sin(\alpha + \delta \alpha)} {sin(\beta + \delta \beta - \alpha - \delta \alpha)} - \frac{sin(\alpha)} {sin(\beta - \alpha)}
    [/tex]
     
  2. jcsd
  3. Aug 15, 2011 #2

    berkeman

    User Avatar

    Staff: Mentor

    That's not an equation (no equal sign), it is an expression. What is the full equation?

    What is the context of the question? Is it for schoolwork, or for a physical problem?
     
  4. Aug 15, 2011 #3
    Oke, the full equation is
    [tex]
    \epsilon = \frac{sin(\alpha + \delta \alpha)} {sin(\beta + \delta \beta - \alpha - \delta \alpha)} - \frac{sin(\alpha)} {sin(\beta - \alpha)}
    [/tex]

    It is for an error analyses of a physical problem!

    Thanks
     
  5. Aug 15, 2011 #4

    I like Serena

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    Homework Helper

    Welcome to PF, hermano! :smile:

    Let's define [itex]f(x) = {\sin(\alpha x) \over sin(\gamma x)}[/itex].
    Do you know what the definition of f'(1) is?
     
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