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Verified answer
Mapel : MatematikaKelas : X SMA
Bab : Trigonometri
Pembahasan :
Sin 2x = -0,5
Sin 2x = -1/2
Sin 2x = Sin 210° , Sin 330°
2x = 210° , 330°
x = 105° , 165°
Hp : {105° , 165°}
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3Tan 2x = -√3
Tan 2x = -1/3 √3
Tan 2x = Tan 150° , Tan 330°
2x = 150° , 330°
x = 75° , 165°
Hp : {75° , 165°}