Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Period of cot inverse x

  1. Apr 19, 2008 #1
    What is the fundamental period of cot inverse x?
    The book, “TRIGONOMETRY “by S.L.Loney says it is –pi/2 to +pi/2 whereas IIT MATHEMATICS by M.L.Khanna says that is 0 to pi
  2. jcsd
  3. Apr 19, 2008 #2


    User Avatar
    Science Advisor

    If f is a non one-to-one function, then, in order to define its "inverse" you must restrict it to an interval on which it is one-to-one. Which such interval you choose is a matter of convention. And for tangent, those are two commonly used conventions.
  4. Apr 20, 2008 #3
    But examination point of view which one to choose?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook