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Math Help - Eliminate the parameter..

  1. #1
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    Eliminate the parameter..

    I have a set of parametrics given as:

    x= f(t) = cos(t)
    y= g(t) = sec(t) =1/cos(t)
    0<=t<=pi/2

    Trig stuff...argh...is one of my weaknesses. Maybe as a result, I have heap big difficulty seeing how I might solve either equation for t, so that i substitute and make a Cartesian equation...

    Ideas?
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  2. #2
    Super Member Failure's Avatar
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    Quote Originally Posted by boardguy67 View Post
    I have a set of parametrics given as:

    x= f(t) = cos(t)
    y= g(t) = sec(t) =1/cos(t)
    0<=t<=pi/2

    Trig stuff...argh...is one of my weaknesses. Maybe as a result, I have heap big difficulty seeing how I might solve either equation for t, so that i substitute and make a Cartesian equation...

    Ideas?
    Substitute x for \cos(t) in y=1/cos(t) perhaps? - If you do that you get y=1/x.
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  3. #3
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    Ahhh.. Thanks. Sometimes i fail to see the forest for the trees.
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