Cos 100 cos 10 + sin 100 sin 10
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Pertanyaan
Cos 100 cos 10 + sin 100 sin 10
1 Jawaban
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1. Jawaban DeaFairuz
cos 100 cos 10 + sin 100 sin 10 = cos (100-10)
cos (100-10) = cos 90 = 0