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Homework Help: Give answer in rectangular form

  1. Feb 27, 2007 #1
    1. The problem statement, all variables and given/known data
    Find the quotient w*u, w/u, w^2
    w=3(cos30 degrees + isin 30 degrees)
    u=2(cos 60 degs + isin 60 degs)
    Give answer in rectangular form..

    3. The attempt at a solution
    I can convert polar to rectangular and back.. but trig to rectangular? Eh?

    I got w*u=6i... I think that would be considered "standard form a + bi" but teacher ?typo? wrote "rectangular form"..
     
  2. jcsd
  3. Feb 27, 2007 #2

    cristo

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    Rectangular form means express z in the form z=x+iy. Clearly, wu=6i is in rectangular form!
     
  4. Feb 28, 2007 #3
    I'm researching about "rectangular form" and I'm finding it to be a+jb. But no worries, I looked up my teacher's key to the review guide, rectangular form is also a+bi or x+iy or something and who cares so case closed:)
     
  5. Feb 28, 2007 #4

    cristo

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    "a and b" and "x and y" are just numbers, so there's no difference there. Some people (engineers?) take the square root of -1 to be j instead of i. They are both correct.
     
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