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Homework Help: Solve cosz=2

  1. Mar 10, 2009 #1
    1. The problem statement, all variables and given/known data

    Sove cosz=2

    2. Relevant equations

    3. The attempt at a solution
    I need to solve this, but am not quite sure how. I was told to use log.
  2. jcsd
  3. Mar 11, 2009 #2


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    Homework Helper

    Hi kathrynag welcome to pf

    i assume you're working with complex numbers...

    does the complex expression of cos help
    [tex]\cos{z} = \frac{e^{iz}+e^{-iz}}{2}[/tex]
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