Cos² 22,5° - sin² 22,5° =
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Pertanyaan
Cos² 22,5° - sin² 22,5° =
2 Jawaban
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1. Jawaban owl998
Jawabanya ada di foto ... ^^2. Jawaban Anonyme
cos² 22,5° - sin² 22,5°
= cos 2(22,5°)
= cos 45°
= 1/2 √2
