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nastyapetrova011
@nastyapetrova011
July 2022
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Доказать тождество (1-cos2 a) (1+ cos 2 a )=sin^2 2 a
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ПрофиЗнания
(1-1+2sin²α)(1+2cos²α-1)=sin²2α
2sin²α*2cos²α=sin²2α
sin²2α =sin²2α
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Answers & Comments
2sin²α*2cos²α=sin²2α
sin²2α =sin²2α