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Arccos and arcsin

  1. Dec 19, 2012 #1
    Since acos(x) = ∫-1/√(1-x^2), and asin(x) = ∫1/√(1-x^2), won't ∫-1/√(1-x^2) = acos(x) = -1*asin(x)?
  2. jcsd
  3. Dec 19, 2012 #2


    Staff: Mentor

    arcsin x + arccos x = pi/2

    so I think what you have is wrong, check again.
  4. Dec 19, 2012 #3
    I doublechecked, but I still can't find my error..
  5. Dec 19, 2012 #4
    Nikitin, is there any chance that you are forgetting the constant of integration?
  6. Dec 19, 2012 #5
    oops, yeh, true :p

    sorry, I had a brainfart due to 3 weeks of exams
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