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-   -   Proving identities calculator (https://www.askmehelpdesk.com/showthread.php?t=701427)

  • Sep 12, 2012, 09:24 AM
    chitorex
    proving identities calculator
    sin2A-cos2A= 2cos2Atan@A-1
  • Sep 12, 2012, 09:32 AM
    ebaines
    You identity formula is incorrect. Not sure whether you meant this:



    or this:



    But neither of these formulas is correct.

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