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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 11: Sin (3x – π/6)= 1 giúp em với ạ

Toán Lớp 11: Sin (3x – π/6)= 1 giúp em với ạ

Comments ( 1 )

  1. sin (3x – π/6)= 1
    ⇔3x – π/6= π/2 + k2π
    ⇔ 3x = π/6+ π/2 + k2π
    ⇔3x=(2π)/3 + k2π
    ⇔x=(2π)/9 + k(2π)/3  (k∈Z)
     

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222-9+11+12:2*14+14 = ? ( )