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Math Help - express in z=a+bi

  1. #1
    Junior Member
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    express in z=a+bi

    Perform the indicated calculation. Give your answer in the form z = a + bi
    not sure how to go about it
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  2. #2
    MHF Contributor chisigma's Avatar
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    All what you have to use is the [elementary] rule...

    (a^{b})^{c}= a^{b\cdot c}

    ... and the [less elementary] Euler's formula...

    e^{i\cdot x}= \cos x + i\cdot \sin x

    Kind regards

    \chi \sigma
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