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    NISHvolleyball Posts: 1, Reputation: 1
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    #1

    Apr 18, 2012, 05:14 PM
    verifying identities
    Verify the identity: tan(2x)=2/(cotx-tanx)
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    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Apr 19, 2012, 05:53 AM
    Convert each of the functions to their sine and cosine equivalents. On the right side you can then simplify by mulipying the numerator and denominator by sin(s)cos(x); the result should be the equivalent of sin(2x) over cos(2x).
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