1)sin(-45°)=-√2/2 , sin³(-45°)=(-√2/2)³=( -2√2)/8

ctg(-45°)=-1,  cos(-45°)=√2/2

8*( -2√2)/8-√2(-1)+√2/2=  -2√2+√2+√2/2=-√2+√2/2=-√2/2

2)tg(-π/4)=-1,  tg²(-π/3)=( -√3)²=3 , sin(-π/2)=-1 , cos²(-π/6)=(√3/2)²=3/4

2*(-1)*3+3*(-1)+10*3/4=-6-3+7,5=-1,5