Results 1 to 3 of 3

Math Help - Please help Trig FUnctions!!!!!

  1. #1
    cheerleader4life4u
    Guest

    Question Please help Trig FUnctions!!!!!

    (tan/theta) - ((sin/theta)(cos/theta)) / (sin^2/theta) = (tan/theta)
    Follow Math Help Forum on Facebook and Google+

  2. #2
    TD!
    TD! is offline
    Senior Member
    Joined
    Jan 2006
    From
    Brussels, Belgium
    Posts
    405
    Thanks
    3
    Bring everything to one side, convert it all to either sin and cos or tan and cot to simplify.
    Give it a shot, if it doesn't work out we'll help further
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Global Moderator

    Joined
    Nov 2005
    From
    New York City
    Posts
    10,616
    Thanks
    10
    Quote Originally Posted by cheerleader4life4u
    (tan/theta) - ((sin/theta)(cos/theta)) / (sin^2/theta) = (tan/theta)
    I understand this is as,
    \tan x-\frac{\sin x\cos x}{\sin^2x}
    First you can cancel the sines, to get,
    \tan x-\frac{\cos x}{\sin x}
    Next, express tangent through sine and cosine,
    \frac{\sin x}{\cos x}-\frac{\cos x}{\sin x}
    Add fractions,
    \frac{\sin^2x-\cos^2x}{\sin x\cos x}
    Recognize the double-angle identities,
    \frac{\cos 2x}{(1/2)\sin 2x}
    Thus,
    2\cot 2x
    Your claim that it is equivalent to
    \tan x
    is dreadfully wrong.
    ---
    Unless you want me to solve for x?
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Trig Equation with varied trig functions
    Posted in the Trigonometry Forum
    Replies: 12
    Last Post: April 12th 2010, 11:31 AM
  2. Replies: 2
    Last Post: September 24th 2009, 10:43 PM
  3. Inverse Trig Functions and Advance Trig
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: September 24th 2008, 04:13 PM
  4. Trig Equations with Multiple Trig Functions cont.
    Posted in the Trigonometry Forum
    Replies: 4
    Last Post: April 7th 2008, 06:50 PM
  5. Trig Equations with Multiple Trig Functions help
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: April 6th 2008, 06:48 PM

/mathhelpforum @mathhelpforum