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Number2Pencil
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Homework Statement
Express the given sinusoid in terms of exponentials and determine the complex frequency(s).
4(e^-2)cos(wt + pi/4)
Homework Equations
Euler's identity:
A(e^i*theta) = A[cos(theta) + i*sin(theta)]
The Attempt at a Solution
I'm really drawing a blank here. I tried writing in a "+ i*sin(wt + pi/4)" after the cosine but that really didn't help my any. I'm not even sure what type of math this is considered... please any starting point would be appreciated