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willzymustdie
@willzymustdie
August 2021
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УПРОСТИТЕ ВЫРАЖЕНИЕ
cos²a(1+cos2a)²tg²a
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Verified answer
Cos²A(1 + cos2A)²tg²A = cos²Asin²A/cos²A·(2cos²A - 1 + 1)² = sin²A·(2cos²A)² = 4cos⁴Asin²A = (2sinAcosA)²cos²A = sin²2Acos²A
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Answers & Comments
Verified answer
Cos²A(1 + cos2A)²tg²A = cos²Asin²A/cos²A·(2cos²A - 1 + 1)² = sin²A·(2cos²A)² = 4cos⁴Asin²A = (2sinAcosA)²cos²A = sin²2Acos²A