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Couple calculations Polar to Rectangular Form

  1. Dec 3, 2013 #1
    1. The problem statement, all variables and given/known data

    I need to find i1+i2

    2. Relevant equations

    for i1=0.092<-98.86
    i2=-4i1-j10/25=-4i1-0.4

    i1=0.092<-98.86
    x=rcosθ=0.092cos(-98.86)=-0.0142
    y=rsinθ=0.092sin(-98.86)=-0.0909
    i1=-0.0142-j0.0909

    Therefor
    i2=-4(-0.0142-j0.0909)-j0.4=0.568+j3636-j0.4=0.568-j0.0364


    i1+i2=-0.0142-j0.0909+0.568-j0.0364=0.0426-0.j1273

    Covert 0.0426-0.j1273 to polar form i1+i2=0.1342<-71.4976

    Correct?
    3. The attempt at a solution
     
  2. jcsd
  3. Dec 3, 2013 #2

    gneill

    User Avatar

    Staff: Mentor

    Your calculations look fine.
     
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