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Parametric Equations Tanget lines

  1. May 6, 2004 #1
    I am asked to find the equation of the tanget line to the curve at the givien points. (y -y1 = m(x1-x))

    The point is:
    (-2/sqrt(3), 3/2)

    Parametric Equations are:
    where t = theta

    x = 2*cot(t)
    y = 2*sin^2(t)

    How would i find what theta is in this set, inorder to solve dy/dx numericlly to get my slope (m)?
  2. jcsd
  3. May 6, 2004 #2
    For what value of theta does x = -2/sqrt(3) and y = 3/2?

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