Question

Решите неравенство пожалуйста))) 1/2sin(x/3) > 1/4

Answer 1

1/2sinx/3>1/4
sinx/3>1/4:1/2
sinx/3>1/2
π/6+2πk<x/3<(π-π/6)+2πk
π/6+2πk<x/3<5π/6+2πk;k€Z
π/2+6πk<x<5π/2+6πk;k€Z