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-   -   verify the identity secx-cosx=sinxtanx (https://www.askmehelpdesk.com/showthread.php?t=705381)

  • Sep 27, 2012, 02:57 PM
    princesss2013
    verify the identity secx-cosx=sinxtanx
    I have no clue on what to do
  • Sep 28, 2012, 06:12 AM
    ebaines
    Start by replacing the secx and tanx functions with their sinx and cosx equivalents. Then it's simply a matter of combining fractions, and applying the identity 1-cos^2x = sin^2x.

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