Ok I've been given a problem that I've got stuck on, I was wondering if anyone here could help.(adsbygoogle = window.adsbygoogle || []).push({});

Q:

v(t) = 100 sin(200t+20^)

i(t) = 10 sin(200t-10^)

Express voltage and current as phasors, and calculate the average power being supplied. (I've used ^ to denote degrees)

The phasors part is pretty simple I think, the voltage is a line 100 in magnitude and 20 degrees positive of the x axis, and the current is of 10 magnitude and 10 degrees negative of the x axis.

Its the power bit that I don't get, should I break these down into complex form and multiply them that way?

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# Average power of AC circuit

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