sin 60 cos 330 + sin 2Π/3
Matematika
Fidra1
Pertanyaan
sin 60 cos 330 + sin 2Π/3
1 Jawaban
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1. Jawaban DB45
Nilai Fungsi trigonometri
sin 60= 1/2 √3
cos 330 = cos (360 - 30)= cos 30 = 1/2 √3
sin 2π/3 = sin 120 = sin (180- 60)= sin 60 = 1/2 √3
sin 60 cos 330 + sin 2π/3 =
= (1/2 √3)(1/2 √3) + 1/2 √3
= 3/4 + 1/2 √3
= 1/4 ( 3 + 2 √3)