Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Simplifying Trigonometric expressions

  1. Aug 31, 2010 #1
    1. The problem statement, all variables and given/known data

    Hey guys, having a trig brain fart here, can you point me in the direction of simplifying:

    [tex]\frac{6cos\vartheta}{2sin\vartheta-3cos\vartheta}[/tex]

    or is it as simplified as it gets? \

    2. Relevant equations

    Thought about using double angle formula


    3. The attempt at a solution
    Just a point in the right direction would be helpful, i.e. what identity to use if the expression can be simplified
     
  2. jcsd
  3. Sep 1, 2010 #2

    CompuChip

    User Avatar
    Science Advisor
    Homework Helper

    You could try double angle formulas, but then you will probably end up with
    [tex]\frac{6 \cos\theta}{2 \cos 2\theta - \sin\theta}[/tex]
    or something like that.

    You could rewrite [itex]\sin\theta = \tan\theta \cos\theta[/itex] and get rid of the cosine.

    Other than that, I don't think there is much simplification possible.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook