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Evaluasi sin(2pi/3) – Blog.artikelkeren.com

Evaluasi sin(2pi/3)

Kita harus mengevaluasi nilai sin 2∏/3

Larutan

sin 2∏/3 dapat dinyatakan sebagai

sin (∏ – 2∏/3)

= sin (3∏-2∏ / 3)

= sin /3

= sin 60

Kita telah mempelajari bahwa sin 60 = 3/2

Penyelesaian

sin 2∏/3= 3/2

10

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