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    Verify a Trigonometric Identity

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    Prove that sin2 x + cos2 x = 1 using only this information : Cos x = (e^jx + e^-jx)/2, sin x = (e^jx - e^-jx)/(2j)
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    © BrainMass Inc. brainmass.com March 4, 2021, 7:39 pm ad1c9bdddf
    https://brainmass.com/math/trigonometry/verify-trigonometric-identity-114330

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    Cos x = (e^jx + e^-jx)/2, sin x = (e^jx - e^-jx)/(2j)
    ...

    Solution Summary

    A trigonometric identity is proven. The expert proves a sin and cos function.

    $2.49

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