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Math Help - elimination

  1. #1
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    elimination

    Eliminate t to give an equation that relates x and y:
    x=tan(t)y=sec^2(t)−2
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  2. #2
    Master Of Puppets
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    It is known that

     1+\tan^2(t)=\sec^2(t)

    You have

    x= \tan(t) \Rightarrow x^2 = \tan^2(t)

    and

     y=\sec^2(t)-2 \Rightarrow y+2=\sec^2(t)

    Using  1+\tan^2(t)=\sec^2(t)

    we get

    1+x^2 = y+2

     y=x^2-1
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  3. #3
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    oh okay, thannk you!
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