# Euler formula for sine

1. Feb 3, 2016

### pinkcashmere

can someone explain how you go from (4.25) to (4.26) using Euler's formulas in the attachment?

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2. Feb 3, 2016

3. Feb 3, 2016

4. Feb 3, 2016

### pinkcashmere

Basically, I want to know how you go from
$ae^{jwt}$ + $be^{-jwt}$

to

$Asin(wt + \theta)$

5. Feb 3, 2016

### pinkcashmere

ok, i got it now.
thanks