Jawab:
Luas Segitiga ABC = 9√3 cm² (D)
Penjelasan dengan langkah-langkah:
AC = 6 cm menghadap ∠B = 30°
BC = 6√3 cm menghadap ∠A = 120°
∠C = 180° - (30° + 120°) = 180° - 150° = 30°
Luas Segitiga ABC
= 1/2 × AC × BC × sin ∠C
= 1/2 × 6 × 6√3 × sin 30°
= 18√3 × 1/2
= 9√3 cm² (D)
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Jawab:
Luas Segitiga ABC = 9√3 cm² (D)
Penjelasan dengan langkah-langkah:
AC = 6 cm menghadap ∠B = 30°
BC = 6√3 cm menghadap ∠A = 120°
∠C = 180° - (30° + 120°) = 180° - 150° = 30°
Luas Segitiga ABC
= 1/2 × AC × BC × sin ∠C
= 1/2 × 6 × 6√3 × sin 30°
= 18√3 × 1/2
= 9√3 cm² (D)