Quote Originally Posted by Jonathan View Post
No, the average value of a sine wave, i.e. sin(x), is precisely zero. The RMS value is sqrt(2).
If you want to be such a pedant, a sine wave doesn't necessarily have an average of zero. It can be offset from zero. You've just assumed that all sine waves are drawn with zero as the base line.

As I'm sure you're aware, I meant that the average value for 90degree either side of a sine wave peak or trough i.e a 180degree section, is sqrt(2).