Results 1 to 3 of 3

Math Help - I have a sine question!

  1. #1
    Member
    Joined
    Sep 2007
    From
    Colorado
    Posts
    145

    I have a sine question!

    How does sin\frac{7pi}{12} = sin(\frac{Pi}{4} +\frac{Pi}{3})

    Do you find factors of 12 which are 3 and 4? What do you do with the 7pi?

    Thanks
    Jason
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Rhymes with Orange Chris L T521's Avatar
    Joined
    May 2008
    From
    Chicago, IL
    Posts
    2,844
    Thanks
    3
    Quote Originally Posted by Darkhrse99 View Post
    How does sin\frac{7pi}{12} = sin(\frac{Pi}{4} +\frac{Pi}{3})

    Do you find factors of 12 which are 3 and 4? What do you do with the 7pi?

    Thanks
    Jason
    \sin\left(\frac{7\pi}{12}\right)=\sin\left(\frac{3  \pi+4\pi}{12}\right)=\sin\left(\frac{3\pi}{12}+\fr  ac{4\pi}{12}\right)=\color{red}\boxed{\sin\left(\f  rac{\pi}{4}+\frac{\pi}{3}\right)}


    Does this make sense?

    --Chris
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Member
    Joined
    Sep 2007
    From
    Colorado
    Posts
    145
    that was easy! I can't believe I didn't see that
    Last edited by ThePerfectHacker; July 10th 2008 at 11:29 AM.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Question about sine and cosine law
    Posted in the Trigonometry Forum
    Replies: 3
    Last Post: February 26th 2011, 08:02 AM
  2. [SOLVED] Sine Question
    Posted in the Trigonometry Forum
    Replies: 2
    Last Post: May 26th 2010, 01:30 PM
  3. Sine and Cosine question
    Posted in the Trigonometry Forum
    Replies: 1
    Last Post: April 28th 2010, 02:30 AM
  4. sine law question
    Posted in the Trigonometry Forum
    Replies: 12
    Last Post: August 1st 2008, 09:24 AM
  5. Sine Differentiation Question
    Posted in the Calculus Forum
    Replies: 2
    Last Post: April 24th 2007, 09:21 AM

Search Tags


/mathhelpforum @mathhelpforum