Results 1 to 2 of 2

Math Help - solving trig eq.

  1. #1
    Newbie
    Joined
    Mar 2009
    Posts
    11

    Exclamation solving trig eq.

    ok here is a question i wanted to solve algebrically ....which is about trig equations..

    sin(x)*cos(x) = 1/4 where 0<x<pi

    i tried to graph the equation but i couldn't.....

    i tried sin(x)*cos(x)= sin(2x)/2 but how to graph sin(2x)/2?

    would it be half the graph of sin(2x)?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Math Engineering Student
    Krizalid's Avatar
    Joined
    Mar 2007
    From
    Santiago, Chile
    Posts
    3,654
    Thanks
    14
    But you almost solve this... \sin 2x=\frac{1}{2}, so 2x=\frac{\pi }{6}+2k\pi ,\,2x=\frac{5}{6}\pi +2k\pi .

    For each k\in\mathbb Z.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Trig word problem - solving a trig equation.
    Posted in the Trigonometry Forum
    Replies: 6
    Last Post: March 14th 2011, 08:07 AM
  2. Solving Trig Ids
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: January 24th 2010, 09:06 AM
  3. trig solving for x
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: July 28th 2009, 05:52 AM
  4. Solving trig
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: December 15th 2008, 05:37 AM
  5. Trig help solving.
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: October 2nd 2006, 09:13 AM

Search Tags


/mathhelpforum @mathhelpforum