Question

6/4cos(-25П/6)sin(113П/3)

Answer 1

6/4cos(-25п/6)sin(113п/3)=6/4sos(-4п-п/6)sin(38п-п/3)=6/4cos п/6 (-sin п/3)=$=6/4* sqrt{3}/2* sqrt{3}/2=-6/4*3/4=-18/16$