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martaru1965
@martaru1965
June 2021
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СОС помогите решить б или 6 помогите
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alvardsaroyan
Sinαcosβ+cosαsinβ-2sinαcosβ=cosαsinβ-sinαcosβ=-sin(α-β)=-sin(34-64)=sin30=1/2
-14cos2α=-14(1-2sin²α)=28sin²α-14=28*0,49-14=13,72-14=-0,28
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martaru1965
можешь на листке написать сфоткать и отправить
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Answers & Comments
-14cos2α=-14(1-2sin²α)=28sin²α-14=28*0,49-14=13,72-14=-0,28