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Жекон124
@Жекон124
June 2022
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1 - sin^2a * ctg^2a(альфа) помогите пожалуйста, если можно подробно
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Evgenia4836
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1-sin²a*(cos²a/sin²a)= 1-cos²a= sin²a
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Жекон124
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Verified answer
1-sin²a*(cos²a/sin²a)= 1-cos²a= sin²a