What is the proper solution for these equations?

1. Solve in two ways. 3 cos" ysin" y dy 2. [ cost sinst dt 3. f sin53y dy sin3 x dx coS" X sin 2 x tan r dx6. [ sin x(2 - 3cosx )2dx 7. sinst dt cost 8. [ sin x dx 9. [ sin xcos x dx 10. sin 30 do