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Math Help - Proving Identities

  1. #1
    zamorakk0
    Guest
    i need help with this one...

    tanx-tan(x-y) = tany
    1+tanx*tan(x-y)
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  2. #2
    vms
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    Apr 2005
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    \[\frac{tan(A) - tan(B)}{{1 + tan(A)*tan(B)}} = tan(A - B)
    Last edited by Math Help; June 1st 2005 at 04:36 PM.
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