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    mathprobs Posts: 1, Reputation: 1
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    #1

    Mar 12, 2012, 02:10 PM
    how to solve trig proofs?
    1/1 cos 1/ 1-cos = 2csc^2
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    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Mar 19, 2012, 11:40 AM
    Please learn to use parentheses, and note that you can't copy and paste math formulas from other applications into this site. After you correct your question I'll be happy to give you some help, but here's a hint: convert the csc(x) function into it's sine equivalent:

    csc(x) = 1/sin(x)
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