Explore BrainMass

Explore BrainMass

    Verify a Trigonometric Identity

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

    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)
    See attached file for full problem description.

    © BrainMass Inc. brainmass.com March 4, 2021, 7:39 pm ad1c9bdddf


    Solution Preview

    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.