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    sgtchevelle's Avatar
    sgtchevelle Posts: 1, Reputation: 1
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    #1

    Jun 13, 2012, 05:58 AM
    trig identities proof Please!
    Can someone please help me prove:
    tan(x) = (tan(x) -1)/ (1-cot (x))
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Jun 13, 2012, 06:14 AM
    Convert the tangent and cotangent functions to their sine and cosine equivalents, then simplify the resulting fraction - you can start by multiplying both numerator and denominator by sin(x)cos(x).
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