So I'm frustrated with this problem:Evaluate the line integral

_{c }5

*x*

*y*

^{2}*d*

*s*, where C is the right half of the circle

*x*+

^{2}*y*=36

^{2}So far, I've taken x=6Cos(t) and y = 6Sin(t) to parametrize a circle with radius of 6, then taken their modulus (to get rid of ds and get dt) and got 6 because rest of it cancels out..

After that I replaced the xy

^{2}with the trig. values to get 5*6*Cos(t)Sin

^{2}(t). After that when I integrate it with respect to t, 3Pi/2 < t < Pi/2 to go over only the right side of the circle, I'm getting 20, which is wrong because the browser is rejecting it as the wrong answer.. :/

I think I'm doing something really silly. Anyone wanna help?

Thanks!

-Sparrow