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Math Help - parametric

  1. #1
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    parametric

    Find the values of a, b, c, and d if the equations trace out the circles shown below.

    x = a + bcos(t) , y = c + dsin(t) , 0<_t<_2pi



    C1:
    a=
    b=
    c=
    d=

    C2:
    a=
    b=
    c=
    d=

    C3:
    a=
    b=
    c=
    d=


    i need some help with this one...mainly on how to find the different values that it is asking for...thanks...

    mer1988
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  2. #2
    MHF Contributor
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    Quote Originally Posted by mer1988 View Post
    x = a + bcos(t) , y = c + dsin(t) , 0<_t<_2pi
    The centers are (a,c).
    If it's a circle, b = d = Radius

    Just write them down. No calculations required.
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