Hello!

I am struggling with one homework excersise, could someone help me?

[tex]\begin{cases} x=3(t-sint) \\ y=3(1-cost) \end{cases}[/tex]

[tex]y\ge 4,5[/tex] and [tex]0>x>2 \pi 3[/tex]

as far as i know i can make this equation, but math teacher said that there are still some problems with the excersise

[tex]S= \int\limits_{0}^{2\pi3} 3(t-sint)3(1-cost)dt[/tex] or just replace [tex]2\pi3[/tex] with [tex]6\pi[/tex]