Results 1 to 4 of 4

Math Help - why is arcsin of t = to pi/2?

  1. #1
    Senior Member
    Joined
    May 2012
    From
    Toronto
    Posts
    258
    Thanks
    1

    why is arcsin of t = to pi/2?

    why is arcsin of t = to pi/2?-picture-24.png

    so arcsin of infinity is pi/2?

    How is that figured?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor MarkFL's Avatar
    Joined
    Dec 2011
    From
    St. Augustine, FL.
    Posts
    1,988
    Thanks
    734

    Re: why is arcsin of t = to pi/2?

    You mean to use the inverse tangent function, but ask yourself, what is \tan\left(\frac{\pi}{2} \right)?
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Senior Member
    Joined
    May 2012
    From
    Toronto
    Posts
    258
    Thanks
    1

    Re: why is arcsin of t = to pi/2?

    oh i see now! tan goes to infinity at pi/2 and negative infinity at -pi/2 so the inverse tan of infinity is therefore pi/2

    and the inverse tan of negative infinity would be -pi/2

    is that right?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor MarkFL's Avatar
    Joined
    Dec 2011
    From
    St. Augustine, FL.
    Posts
    1,988
    Thanks
    734

    Re: why is arcsin of t = to pi/2?

    Yes, that is spot on!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. arcsin(sin x) = x
    Posted in the Calculus Forum
    Replies: 2
    Last Post: March 8th 2011, 12:54 PM
  2. Replies: 1
    Last Post: June 9th 2010, 06:23 AM
  3. arcsin
    Posted in the Calculus Forum
    Replies: 3
    Last Post: November 11th 2009, 03:49 PM
  4. arcsin(sin(x)) ?
    Posted in the Calculus Forum
    Replies: 6
    Last Post: September 18th 2007, 08:56 PM
  5. Replies: 2
    Last Post: September 18th 2007, 12:36 PM

Search Tags


/mathhelpforum @mathhelpforum