Evaluate the integral. JE/6 8 cot2(x) dx 8(-3V/3 +7) X 3 Submit Answer 13. [-/0.22 Points] DETAILS SCALCET9 7.2.039 . Evaluate the integral. In a cots ( ) csc 3 ( $ ) do Submit Answer 14. [-/0.22 Points] DETAILS SCALCET9 7.2.041. Evaluate the integral. (Remember to use absolute values where appropriate. Use C for the constant of integration.) 9 csc ( x ) dx Submit Answer 15. [-/0.22 Points] DETAILS SCALCET9 7.2.045 Evaluate the integral. cos ( 9t) cos ( 18t) dt