cos 41 .cos 11 + sin 41.sin11
Matematika
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Pertanyaan
cos 41 .cos 11 + sin 41.sin11
1 Jawaban
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1. Jawaban Anonyme
Bab Trigonometri
Matematika SMA Kelas X
cos 41° . cos 11° + sin 41° . sin 11° = cos (41 - 11)°
= cos 30°
= 1/2 . √3