Hasil 2 cos 120°+sin 330°-cos240°adalah
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azka3627
Pertanyaan
Hasil 2 cos 120°+sin 330°-cos240°adalah
1 Jawaban
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1. Jawaban Adlannugroho
Cos 240 + sin 330 - cos 240
(-Cos (240-180) ) + (-sin (360-330)) - (-cos (240 - 180))
(-cos) 60 + (-sin) 30 - (-cos) 60
-1/2 + (-1/2) - (-1/2) = -1/2
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