Вроде 64000. потому что 40000:100*60=24000+40000=64000
1) cos105cos5 + sin105cos85 = cos105cos(90-85) + sin105cos85 =
=cos105sin85 + sin105cos85 = sin(105+85) = sin190
2)sin195cos5 + cos195sin185 = sin195cos5 + cos195sin(180+5) =
=sin195cos5 - cos195sin5 = sin(195-5) = sin190
sin190/sin190 = 1
2√25/4 -3√19/9=2*5/2-3√19/3=5-√19