nilai 2 sin 210° cos 180°
Matematika
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Pertanyaan
nilai 2 sin 210° cos 180°
1 Jawaban
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1. Jawaban Anonyme
Kelas 10 Matematika
Bab Trigonometri Dasar
2 . sin 210° . cos 180°
= 2 . sin (180° + 30°) . (-1)
= 2 . (- sin 30°) . (-1)
= -2 . (-1/2)
= 1