Find an interval of t-values such that (#) = (3 cos (), 3 sin (7)) traces the lower half of the circle of radius 3 and the #-values on the interval are between 0 and 27x. (Give your answer as an interval in the form (*,*). Use the symbol co for infinity, U for combining intervals, and an appropriate type of parenthesis "(",")", "[","]" depending on whether the interval is open or closed. Enter @ if the interval is empty. Express numbers in exact form. Use symbolic notation and fractions where needed.) I e