Results 1 to 2 of 2

Math Help - Trig tangent problem

  1. #1
    Newbie
    Joined
    Jan 2010
    Posts
    1

    Trig tangent problem

    Solve the following equations for 0 (less than or equal to) x (less than or equal to) 2pi.

    tan x = sq.rt.(3) - 2

    cos x = 1/7. I know one of the answers is 1.43, how do I get the others?

    Any help would be greatly appreciated. Thanks.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    29
    Quote Originally Posted by LJstone View Post

    cos theta = 1/7. I know one of the answers is 1.43, how do I get the others?
    You have the answer in the first quadrant? What other quadrant is cosine positive in? The 4th quadrant correct! Now use the identity to solve for \theta in this quadrant.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. solving trig tangent equation.
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: September 18th 2010, 06:09 AM
  2. equation of the tangent line with trig
    Posted in the Calculus Forum
    Replies: 3
    Last Post: October 19th 2009, 12:46 PM
  3. Trig Integration -- secant and tangent problem
    Posted in the Calculus Forum
    Replies: 2
    Last Post: September 27th 2009, 03:26 PM
  4. Replies: 2
    Last Post: June 22nd 2009, 06:51 PM
  5. Help with tangent line to a trig function
    Posted in the Calculus Forum
    Replies: 1
    Last Post: December 10th 2008, 01:54 PM

Search Tags


/mathhelpforum @mathhelpforum