Question

решите систему неравенств sin>=1/2 и cos>1/2

Answer 1

sinx≥1/2
π/6+2πn≤x≤5π/6+2πn,n∈Z
cosx>1/2
-π/3+2πn<x<π/3+2πn,n∈Z
x∈[π/6+2πn;π/3+2πn,n∈Z)