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Math Help - Complex conjugate and absolute value

  1. #1
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    Complex conjugate and absolute value

    Need help with following. Find the complex conjugate and absolute value of the following : a)-2 b)2-2i c)cosx + isinx d)e^-2iz
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  2. #2
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    Quote Originally Posted by myoplex11 View Post
    a)-2
    Write as -2+0i change the imaginary part -2-0i = -2
    b)2-2i
    This is trivial.
    c)cosx + isinx
    \cos x - i\sin x

    d)e^-2iz
    Write as,
    \cos(-2iz)+i\sin(-2iz)
    \cos (2iz)-i\sin (2iz)
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