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    Proof of Trignometric Relationship Using Complex Numbers

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    Given that cos x=(e^jx + e^-jx)/2 and sin x=(e^jx - e^-jx)/2j

    Using ONLY this information, prove that: cosAsinB=1/2[sin(A+B)- sin(A-B)].

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    © BrainMass Inc. brainmass.com March 4, 2021, 6:22 pm ad1c9bdddf
    https://brainmass.com/math/complex-analysis/proof-trignometric-relationship-complex-numbers-42332

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    A trignometric relationship is proven using complex numbers. The solution is detailed and well presented.

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