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Simplifying trig equation

  1. Nov 6, 2008 #1
    1. The problem statement, all variables and given/known data

    (sec^2 x - 1)/(sin^2 x)

    2. Relevant equations

    3. The attempt at a solution

    i know that the answer is sec^2 x, but i have no idea what steps to take to get there
  2. jcsd
  3. Nov 6, 2008 #2


    Staff: Mentor

    What trig identities do you know? There are several that would be helpful here.
  4. Nov 7, 2008 #3
    Do you know what sec2x equals to?


    Can you try to solve it for your own?

    I will help you little bit.

    [tex]\frac{\frac{1}{cos^2x} - 1}{sin^2x}=\frac{\frac{1-cos^2x}{cos^2x}}{sin^2x}[/tex]

    Do you know what 1-cos2 equals to?

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