Mapel : Matematika Kelas : X SMA Bab : Trigonometri
Pembahasan : 2/(Cot x) + (3/Cosec x) = 0 2/[Cos x / Sin x] + 3/[1/Sin x] = 0 2Sin x / Cos x + 3Sin x = 0 2Sinx + 3Sin x Cos x = 0 Sin x(2 + 3 Cos x) = 0
2 + 3Cos x = 0 3Cos x = -2 Cos x = -2/3 (Tidak memenuhi)
Sin x = 0 Sin x = Sin 0° , Sin 180° , Sin 360° x = 0° , 180° , 360°
Hp : {0° , 180° , 360°}
2 votes Thanks 2
Wulndra
maaf mau tanya knp cos x = -2/3 (tidak memenuhi) ??
Verified answer
Mapel : MatematikaKelas : X SMA
Bab : Trigonometri
Pembahasan :
2/(Cot x) + (3/Cosec x) = 0
2/[Cos x / Sin x] + 3/[1/Sin x] = 0
2Sin x / Cos x + 3Sin x = 0
2Sinx + 3Sin x Cos x = 0
Sin x(2 + 3 Cos x) = 0
2 + 3Cos x = 0
3Cos x = -2
Cos x = -2/3
(Tidak memenuhi)
Sin x = 0
Sin x = Sin 0° , Sin 180° , Sin 360°
x = 0° , 180° , 360°
Hp : {0° , 180° , 360°}
Verified answer
Silakan dipahami,, semangat!!!