7 = 3 + 3 Cos @B 16. use a double integral to find the area of the region inside r = B + B cos 8 IT , 3 + 3 COSD 2 17. evaluate the line integral () as c:r(t) = 1hittj, Ost52 y ( + ) . 7 (2+ ) ' +1 2 8 + F