Consider parametric equations given by x = 3 cos (t/3) cos t and y = 3 sin (t/3) - sin t. %3D a) Graph the curve represented by the parametric equations above. b) Find the slope of the line tangent to the curve at the point where t = T/ 4. c) Find the arc length of the curve from t = 0 to t = 3 7/2.