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-   -   How do I prove this identity (https://www.askmehelpdesk.com/showthread.php?t=614889)

  • Nov 26, 2011, 12:56 PM
    ellenpink
    how do I prove this identity
    (3-4cos(2x) cos(4x))รท(3 4cos(2x) cos(4x))=tan^(4)(x)
  • Nov 26, 2011, 10:11 PM
    corrigan
    Try retyping the question. I don't know exactly what you are asking.

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