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: Problem with using Power-Reducing Trigonometric identities

  1. Jan 24, 2012 #1
    1. The problem statement, all variables and given/known data
    Tan^3Theta


    2. Relevant equations

    Tan^2Theta=1-cos2Theta/1+cosTheta

    3. The attempt at a solution
    Attached
     

    Attached Files:

  2. jcsd
  3. Jan 24, 2012 #2

    rock.freak667

    User Avatar
    Homework Helper

    What are you trying to reduce it to?
     
  4. Jan 24, 2012 #3
    until there are no terms with a power greater than 1
     
  5. Jan 24, 2012 #4

    rock.freak667

    User Avatar
    Homework Helper

    Then you can just replace tan by sin/cos in your third line and multiply out and you will have no term whose power is greater than one.
     
  6. Jan 24, 2012 #5
    Thanks! I was over complicating it, like usual.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook