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    Exponential and Trigonometric Proof

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    Why is e^ik(Pi) = e-ik(Pi)?

    © BrainMass Inc. brainmass.com October 5, 2022, 2:13 am ad1c9bdddf
    https://brainmass.com/math/trigonometry/exponential-trigonometric-proof-153909

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    I was asked a, simple, question I can't answer why is e^ik(Pi) = e-ik(Pi)

    or how does on show, prove?

    Remember
    So

    Based on the trig relationship
    since

    When k is integer, we know that

    Otherwise, since

    So when k is integer,

    Hence,

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    © BrainMass Inc. brainmass.com October 5, 2022, 2:13 am ad1c9bdddf>
    https://brainmass.com/math/trigonometry/exponential-trigonometric-proof-153909

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