Explore BrainMass

Proof of Trignometric Relationship Using Complex Numbers

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)]


Solution Summary

A Trignometric Relationship is proven Using Complex Numbers. The solution is detailed and well presented. The response received a rating of "5" from the student who originally posted the question.