Nilai dar sin 150°+sin 120° cos 210°-cos 300°
Matematika
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Pertanyaan
Nilai dar sin 150°+sin 120° cos 210°-cos 300°
1 Jawaban
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1. Jawaban Anonyme
Kelas 10 Matematika
Bab Trigonometri
sin 150° + sin 120° . cos 210° - cos 300°
= 1/2 + 1/2 √3 . (-1/2 √3) - 1/2
= -1/4 . 3
= -3/4