Results 1 to 2 of 2

Math Help - pre calc calculator stuff

  1. #1
    Junior Member
    Joined
    Sep 2008
    Posts
    64

    pre calc calculator stuff

    Hi, Im not sure how to solve these, although im pretty sure you do it all in the calculator... can someone help me out?

    sec (arccos 2/3)

    csc (arccot 3)

    csc (arccsc 5)

    tan (arcsec (-radical2))


    thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,830
    Thanks
    123
    Quote Originally Posted by cokeclassic View Post
    Hi, Im not sure how to solve these, although im pretty sure you do it all in the calculator... can someone help me out?

    sec (arccos 2/3)

    csc (arccot 3)

    csc (arccsc 5)

    tan (arcsec (-radical2))


    thanks
    1. You are supposed to know that (for example) \cos(\arccos(x))=x

    2. I'll show you how to do the first question:

    \sec \left(\arccos \left(\frac23 \right) \right)=\dfrac1{\cos\left(\arccos \left(\frac23 \right) \right)}=\dfrac32
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: May 6th 2012, 02:16 PM
  2. A few Pre-Calc problems in my AP Calc summer packet
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: August 30th 2010, 03:40 PM
  3. Replies: 1
    Last Post: January 13th 2010, 11:57 AM
  4. hi i really need help on this stuff
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: January 28th 2009, 09:19 AM
  5. Calc(Vectors and stuff)
    Posted in the Calculus Forum
    Replies: 1
    Last Post: December 4th 2006, 11:37 PM

Search Tags


/mathhelpforum @mathhelpforum