Sin 120° x tan 60°+ sin 240° x tan 120°
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Pertanyaan :
Sin 120°×Tan 60°+Sin 240°×Tan 120°
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Jawaban :
Sin 120°×Tan 60°+ Sin 240°×Tan 120°
=Sin (180°-60°)×√3+Sin(180°+60°)× Tan (180°-60°)
=Sin 60°×√3+Sin-60°×Tan-60°
=√3/2×√3+(-√3/2)×(-√3)
=3/2+3/2
=6/2
=3
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Mapel : Matematika
Kelas : 10
Bab : Trigonometri
Kode Kategorisasi : 10.3.4