Cos10°+cos50°+cos70°=
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Pertanyaan
Cos10°+cos50°+cos70°=
1 Jawaban
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1. Jawaban XxDynhaxX
Cos10°+cos50°+cos70°
2Cos(30°).cos(-20°)+cos(70°)
2 x √3/2 x cos(20°)+cos(70°)
√3 x cos(20°) + cos(70°)
1.96962