(cos A + sin A) (cos A - sin A) +2 sin^2 A =1
Matematika
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Pertanyaan
(cos A + sin A) (cos A - sin A) +2 sin^2 A =1
1 Jawaban
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1. Jawaban Anonyme
awab
trigonometri
(cos A + sin A)(cos A -sin A) + 2 sin² A = 1
cos² A - sin² A + 2 sin² A = 1
1 - sin² A - sin² A + 2 sin² A = 1
1 - 2sin² A + 2 sin² A = 1
1 = 1
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