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Math Help - a + ib

  1. #1
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    a + ib

    how do you express sin( a+ ib) in the standard form of a+ ib
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  2. #2
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    Quote Originally Posted by alexandrabel90 View Post
    how do you express sin( a+ ib) in the standard form of a+ ib

    Read the thread http://www.mathhelpforum.com/math-he...ex-number.html.

    Tonio
    Last edited by mr fantastic; November 1st 2009 at 02:28 AM. Reason: Added thread link.
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  3. #3
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    Use the identity

    \sin{z} = \frac{1}{2i}(e^{iz} - e^{-iz}).
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