Hitung: [tex]\frac{2}{cotx} + \frac{3}{cosecx} =0[/tex]

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°}

silakan dipahami,, semangat!!!