$If\ the\ angle\ made\ by\ the\ tangent\ at\ the\ point\ (x_0, y_0)\ on\ the\ curve$ $x = 12\Big(t + \sin t \cos t\Big), y = 12\big(1 + \sin t\big)^2, 0 < t < \frac{\pi}{2},\ with\ the\ positive\ x\text{-axis}\ is\ \frac{\pi}{3},\ then\ y_0\ is\ equal\ to\ :$
