Sin 5(per)6 π + cos 1 ⅔ π = ?
Matematika
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Pertanyaan
Sin 5(per)6 π + cos 1 ⅔ π = ?
1 Jawaban
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1. Jawaban Anonyme
Bab Trigonometri
Matematika SMA Kelas X
sin 5π/6 + cos 5π/3
= sin ((5 x 180°)/6) + cos ((5 x 180°)/3)
= sin 150° + cos 300°
= 1/2 + 1/2
= 1