Results 1 to 3 of 3

Math Help - Verifying Trigonometric Identities, HELP!!!

  1. #1
    nee
    nee is offline
    Junior Member
    Joined
    Aug 2008
    Posts
    36

    Verifying Trigonometric Identities, HELP!!!

    HEEEEEEEEELP!!!

    sinX/(1-cosX) - sinXcosX/(1+cosX) = cscX(1+cossquaredX)

    nee
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    Joined
    Jun 2008
    Posts
    792
    One good strategy is to try to get the complicated side equal to the simpler side.

    \frac{\sin{x}}{1-\cos{x}} - \frac{\sin{x}\cos{x}}{1+\cos{x}} = \csc{x}(1+\cos^2{x})

    \frac{\sin{x}(1+\cos{x})}{1-\cos^2{x}} - \frac{\sin{x}\cos{x}(1-\cos{x})}{1-\cos^2{x}}

    \frac{\sin{x}(1+\cos{x})}{\sin^2x} - \frac{\sin{x}\cos{x}(1-\cos{x})}{\sin^2{x}}

    \frac{(1+\cos{x})}{\sin{x}} - \frac{\cos{x}(1-\cos{x})}{\sin{x}}

    \frac{1+\cos{x} - \cos{x}(1-\cos{x})}{\sin{x}}

    \frac{1+\cos{x} - \cos{x}+\cos^2{x}}{\sin{x}}

    \frac{1+\cos^2{x}}{\sin{x}} = \csc{x}(1+\cos^2{x})
    Follow Math Help Forum on Facebook and Google+

  3. #3
    nee
    nee is offline
    Junior Member
    Joined
    Aug 2008
    Posts
    36
    Wow awsom thanks alot!!!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Verifying trigonometric identities?
    Posted in the Trigonometry Forum
    Replies: 10
    Last Post: February 6th 2011, 01:01 PM
  2. verifying trigonometric identities
    Posted in the Trigonometry Forum
    Replies: 14
    Last Post: April 29th 2010, 10:09 PM
  3. Verifying Trigonometric identities.
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: March 19th 2010, 03:17 AM
  4. Verifying Trigonometric Identities
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: May 5th 2009, 08:24 AM
  5. verifying trigonometric identities
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: April 18th 2009, 03:18 AM

Search Tags


/mathhelpforum @mathhelpforum