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Dashalyub15
@Dashalyub15
June 2022
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Помогите, пожалуйста, упростить
sina-sinb/cosa+cosb
(a-альфа, b-бетта)
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sharadi
Verified answer
Числитель = Sinα - Sinβ = 2Sin(α-β)/2 Сos(α+β)/2
знаменатель = 2Сos(α+β)/2 Сos(α-β)/2
Ответ: tg(α-β)/2
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Answers & Comments
Verified answer
Числитель = Sinα - Sinβ = 2Sin(α-β)/2 Сos(α+β)/2знаменатель = 2Сos(α+β)/2 Сos(α-β)/2
Ответ: tg(α-β)/2