1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Eliminate paramter

  1. Apr 17, 2012 #1
    1. The problem statement, all variables and given/known data

    Eliminate the parameter and express in x and y

    x= 2-3cos2t y= 5+7sin2t

    2. Relevant equations

    3. The attempt at a solution

    I tried changing them in terms of cos^2t and sin^2t. I change the first equation into ((x-5)/6) = cos^2t. But I can't figure out how to change the second one in terms of sin^2t.
  2. jcsd
  3. Apr 17, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Use ##\cos^2(2t)+\sin^2(2t)=1##.
  4. Apr 17, 2012 #3
    Ahh thanks didn't know you could do that
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Eliminate paramter
  1. Gaussian elimination (Replies: 2)

  2. Gaussian elimination (Replies: 3)

  3. Eliminating parameter (Replies: 1)

  4. Eliminating constants (Replies: 5)