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Math Help - Quick Trig Question, help please

  1. #1
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    Quick Trig Question, help please



    What would be in the box? I'm looking for an answer in terms of things like csc, sec, tan, etc. i think it's sec^2 but i'm not sure. thanks!
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  2. #2
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    Quote Originally Posted by gobbajeezalus View Post


    What would be in the box? I'm looking for an answer in terms of things like csc, sec, tan, etc. i think it's sec^2 but i'm not sure. thanks!
    Hi gobbajeezalus,

    It is indeed sec^2.

    Since
    \tan^2(x)
    =\frac{sin^2(x)}{cos^2(x)}
    =\frac{1-cos^2(x)}{cos^2(x)}
    =\frac{1}{cos^2(x)}-\frac{cos^2(x)}{cos^2(x)}
    =sec^2(x)-1
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