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-   -   Establishing Identity (https://www.askmehelpdesk.com/showthread.php?t=513214)

  • Oct 3, 2010, 03:00 PM
    honeybear101
    Establishing Identity
    Establish this Identity:
    (Cos(x)-Sin(x))^2+2Sin(x)Cos(x)=1
  • Oct 3, 2010, 09:53 PM
    Unknown008

    First, expand the brackets.

    Then, cross out some things.

    Then, use:



    And you'll be done! :)

    Is that okay?
  • Oct 3, 2010, 10:07 PM
    honeybear101
    LOL! That was so easy... Thank you!
  • Oct 3, 2010, 10:21 PM
    Unknown008

    You're welcome :)

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