Please answer question #13,14,15

13. [-/1 Points] DETAILS SCALC7 7.2.007. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Evaluate the integral. TT /2 5 cos2(0) de Need Help? Watch It Submit Answer 14. [-/1 Points] DETAILS LARCALC11 8.3.063. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Evaluate the definite integral. cos(t) 53 + sin(t) - dt Need Help? Read It Watch It Submit Answer 15. [0/1 Points] DETAILS PREVIOUS ANSWERS SCALC7 7.2.020. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Evaluate the integral. (Use C for the constant of integration.) 9 cos ? ( * ) sin ( 2 * ) dx (-cos 2x ) +( + 16(-COS 4x) + C x Submit