(Sin A + cos A)2 - (sin A - cos A)2
Matematika
helmiyatiannisa
Pertanyaan
(Sin A + cos A)2 - (sin A - cos A)2
1 Jawaban
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1. Jawaban EdiHeaven
(Sin A + cos A)² - (sin A - cos A)²
(sin²A+2sinacosa+cos²a) -(sin²a-2sinacosa+cos²a)
(1+2sinacosa) -(1-2sinacosa)
4sinacosa