1
-sint-2sint=3
sint=-1
t=-π/2+2πn,n∈z
2
-2sint+sint=-1
sint=1
t=π/2+2πn,n∈z
3
3cost-cost=1
2cost=1
cost=1/2
t=+-π/3+2πn,n∈z
4
Если в первой скобке π/2+t,то
5cost+cost-8cost=1
-2cost=1
cost=-1/2
t=+-2π/3+2πn,n∈z
5
8/(-sin(7π-π/4)*cos(8π-π/4))=-8/(sibπ/4*cosπ/4)=-16/sin(π/2)=
=-16/1=-16