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-   -   Trigonometry qusetion (https://www.askmehelpdesk.com/showthread.php?t=332306)

  • Mar 22, 2009, 05:12 AM
    wazhma1991
    trigonometry qusetion
    3sin3x=6sin3xcos3x
    is it ture

    3/4sin3A/2=3/2sin3A/4-cos3A/4
    how you solved:confused:
  • Mar 22, 2009, 08:49 AM
    galactus
    Look at the right side.

    Recognize the identity

    You have



    Is it true or false?
  • Mar 23, 2009, 05:56 AM
    wazhma1991

    Thanks galactus you are right can you solve anther qusetion to

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