December 2nd, 2012, 01:35 AM  #1 
Newbie Joined: Dec 2012 Posts: 2 Thanks: 0  Average Power help
Show that: P(ave.) = Im*Vm(cos?)/2 WHERE: i=Im*sin?t v=Vm*sin(?t+?) ==> sin(?tcos? + sin?*cos?t hint: P = v*i (instantaneous power) P(ave.) =1/T?0^T P.dt (integrated from 0 to T) please help guys... thanks. 
December 3rd, 2012, 07:38 PM  #2 
Senior Member Joined: Jul 2012 From: DFW Area Posts: 635 Thanks: 96 Math Focus: Electrical Engineering Applications  Re: Average Power help Can you take it from here? The second term should cancel when evaluated. 

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