√6(sin20cos(360-40)+sin40sin(360+70))/(sin(720+35)sin(720+170)+sin(720+260)sin(720+55)=√6(sin20cos40+sin40sin70)/(sin35sin170+sin260sin55)= √6(sin20cos40+sin40cos20)/(sin35sin10-cos10cos35)=√6sin(20+40)/cos(10+35)= √6sin60/cos45=√6*√3/2/(√2/2)=3
извини минуса не получилось