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Homework Help: Really simple question

  1. Jan 30, 2009 #1
    k guys if you have 1/cos (x)
    and x= pi/4

    then the answer is root 2

    but i'm actually having trouble writing it out


    1/ cos (pi/4) = 1/(root2 / 2)

    so how come answer isn't 2/root2???
  2. jcsd
  3. Jan 30, 2009 #2


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    Science Advisor
    Homework Helper

    2/sqrt(2)=sqrt(2). Can you see why?
  4. Jan 30, 2009 #3
    yea.. i see it.. brain fart been studying all day :(
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