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Drawing an argand diagram of complex voltage

  1. Aug 4, 2011 #1
    1. The problem statement, all variables and given/known data

    draw an argand diagram of the complex voltage v at t=pi/1800, also how do i obtain the instantaneous voltage

    2. Relevant equations
    i = lcoswt


    3. The attempt at a solution
    well so far i have a straight line
     
  2. jcsd
  3. Aug 4, 2011 #2
    also i know the projection on the horizontal axis represent the voltage and current
    but whats d method of drawing it
     
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