Cos 54 cos 36/cos 18
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Cos 54 cos 36/cos 18
1 Jawaban
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1. Jawaban Anonyme
cos 54 cos 36 / cos 18
= 1/2 (cos 90 + cos 18) / cos 18
= 1/2 (cos 90 /cos 18 + 1)
= 1/2 (0 + 1)
= 1/2