Question

qual a resolução de sen (2x)-1/2=0

Answer 1

sen2x - 1/2 = 0

sen2x = 1/2

2x = π/6 + 2kπ => x = π/12 + kπ
ou
2x = π - π/6 + 2kπ

2x = 5π/6 + kπ

x = 5π/12 + kπ

S =  {x ∈ IR/ x = π/12 + kπ ou x = 5π/12 + kπ, k ∈ Z}