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Homework Help: Did i simplify this correctly

  1. Feb 18, 2009 #1
    1. The problem statement, all variables and given/known data
    sqrt((tcost)^2+(-tsint)^2


    2. Relevant equations



    3. The attempt at a solution
    pulled out the sin^2t+cos^2t
    added the two t^2
    took the sqrt of
    t*sqrt(2)
     
  2. jcsd
  3. Feb 18, 2009 #2

    Dick

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    No, it's not correct. Factor the inside of the sqrt before you start 'pulling things out'.
     
  4. Feb 18, 2009 #3
    so is the answer simply t
     
  5. Feb 18, 2009 #4

    Dick

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    Almost right. |t| actually.
     
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