Share
Explore BrainMass

Verify a Trigonometric Identity

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.

Attachments

Solution Preview

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

Solution Summary

A trigonometric identity is proven.

$2.19