25 баллов .Помогите пожалуйста срочно математика 10класс какую сможете решать ответьте

108a)x∈(2πk;π+2πk,k∈z)б)x∈(-π/2+πk;πk,k∈z)в)x∈(π/2+2πk;π/2+2πk,,k∈z)г)x∈(πk;π/2+πk,,k∈z)109а)x∈[π/6+2πk;5π/6+2πk,k∈z]б)x∈[2π/3+2πk;7π/3+2πk,,k∈z]в)x∈[-π/6+2πk,π/6+2πk,,k∈z]г)x∈(-π/2+πk;-π/6+πk,,k∈z]110а)-π/6=2πk≤5x≤7π/6+2πkx∈[-π/30+2πk/5;7π/30+2πk/5,,k∈z]б)-π/4+πk<2x<π/2+πkx∈(-π/8+πk/2;π/4+πk/2,,k∈z)в)π/3+2πk<8x<5π/3+2πkx∈(π/24+πk/4;5π/24+πk/4,,k∈z)г)3π/4+πk≤3x<π+πkx∈[π/4+πk/3;π/3+πk/3)