Question

sin2x≤1/2 помогите, кто сможет?

Answer 1

sin2x≤1/2
5π/6+2πn≤ 2x ≤ 13π/6+2πn, n∈Z |:2
5π/12+πn ≤ x ≤ 13π/12+πn, n∈Z
x∈[5π/12+πn; 13π/12+πn], n∈Z