Results 1 to 4 of 4

Math Help - identity help

  1. #1
    Junior Member
    Joined
    Jan 2009
    Posts
    52

    identity help

    <br /> <br />
\frac{\sec{x}\tan{x}}{\tan^3{x}} = \frac{\cos{x}}{\sin{x}}<br /> <br />

    the part in the middle is what I am missing
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member

    Joined
    May 2006
    From
    Lexington, MA (USA)
    Posts
    11,678
    Thanks
    611
    Hello, TYTY!

    \frac{\sec x\tan x}{\tan^3\!x} \:=\: \frac{\cos x}{\sin x}

    the part in the middle is what I am missing .
    . . . oh, is that all?

    Please check the problem again . . .

    The given statement is not an identity.

    Follow Math Help Forum on Facebook and Google+

  3. #3
    A riddle wrapped in an enigma
    masters's Avatar
    Joined
    Jan 2008
    From
    Big Stone Gap, Virginia
    Posts
    2,551
    Thanks
    12
    Awards
    1
    Quote Originally Posted by TYTY View Post
    <br /> <br />
\frac{\sec{x}\tan{x}}{\tan^3{x}} = \frac{\cos{x}}{\sin{x}}<br /> <br />

    the part in the middle is what I am missing
    Hi TYTY,

    Maybe, you meant

    \frac{\sec{x}\tan{x}}{\tan^3{x}} = \frac{\cos{x}}{\sin^2{x}}
    Last edited by masters; March 25th 2009 at 07:59 AM.
    Follow Math Help Forum on Facebook and Google+

  4. #4
    Junior Member
    Joined
    Jan 2009
    Posts
    52
    ouch

    better start that whole problem over again...
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. the i*pi=ln(-1) identity
    Posted in the Pre-Calculus Forum
    Replies: 7
    Last Post: August 1st 2010, 04:26 AM
  2. identity
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: July 24th 2010, 06:50 AM
  3. Identity
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: February 11th 2010, 08:32 AM
  4. An identity
    Posted in the Math Challenge Problems Forum
    Replies: 0
    Last Post: April 7th 2009, 10:22 PM
  5. identity
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: January 21st 2009, 09:40 PM

Search Tags


/mathhelpforum @mathhelpforum