Решите задачу:
ОДЗ cosx≥0⇒x∈[-π/2+2πn;π/2+2πn [2sin²x=0⇒sinx=0⇒x=πn,n∈z+ОДЗ⇒x=2πn,n∈z [cox=0⇒x=π/2+2πn,n∈z