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: Parameter equation

  1. Nov 27, 2007 #1
    1. The problem statement, all variables and given/known data

    How can I eliminate tha parameter of these equations:
    x=sec x, y=tan x

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Nov 27, 2007 #2


    User Avatar
    Science Advisor
    Homework Helper

    Square them and subtract.
  4. Nov 28, 2007 #3


    User Avatar
    Science Advisor

    You can't if there is NO parameter. I assume you meant x= sec t, y= tan t. As Dick said, square and subtract- you are using a simple trig identity.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook