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Math Help - Evaluation of Sec...

  1. #1
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    Evaluation of Sec...

    Evaluate:

    Sec^-1 (sec (-Pi/6) )

    I really don't have much of a clue!

    Thankyou
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  2. #2
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    Quote Originally Posted by katedew987 View Post
    Evaluate:

    Sec^-1 (sec (-Pi/6) )

    I really don't have much of a clue!

    Thankyou

    For any invertible function f\,,\,\,f^{-1}(f(x))=x\,,\,\forall x in the definition domain of f

    Tonio
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  3. #3
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    Quote Originally Posted by katedew987 View Post
    Evaluate:

    Sec^-1 (sec (-Pi/6) )

    I really don't have much of a clue!

    Thankyou
    Well if we are only interested in the smallest positive solution that would be \pi/6 or the smallest absolute value negative solution -\pi/6

    Now can you identify all of the solutions?


    CB
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