Page 23 - BAHAN AJAR NORELIA NOVI PERBANDINGAN TRIGONOMETRI
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10.Jawaban: B
Pembahasan:
Diketahui, titik (2,210°), r = 2, α = 210°
Ditanyakan, koordinat cartesius?
x = r cosα
= 2cos210°
= 2 . -½√3
= -√3
y = r sinα
= 2 sin210°
= 2 . -½
= -1
