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Homework Help: Limit of sec(x) as x goes to pi/2, does the limit exist?

  1. Sep 21, 2008 #1
    1. The problem statement, all variables and given/known data

    lim sec(x)
    x-> pi/2 from the left

    2. Relevant equations

    3. The attempt at a solution
    I wasn't quite sure where to start. I know sec is 1/cos. Does the limit not exist?
  2. jcsd
  3. Sep 21, 2008 #2
    Re: limit

    What's the value of cos(pi/2)?
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