1) sin(3П/4) = -√2/22) cos(-П/3) = cos(П/3) = 1/23) tg(3П/4) = tg(П/4) = 14) (sin(П/3) - 2cos(П/2) + tg(11П/6)) tg(-П/4)= (√3/2 - 20 + √3) (-1)= (√3/2 + √3) (-1)= -√3/2 - √3
1) sin(3П/4) = -√2/2
2) cos(-П/3) = cos(П/3) = 1/2
3) tg(3П/4) = tg(П/4) = 1
4) (sin(П/3) - 2cos(П/2) + tg(11П/6)) tg(-П/4)
= (√3/2 - 20 + √3) (-1)
= (√3/2 + √3) (-1)
= -√3/2 - √3