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Кристина1902
@Кристина1902
August 2022
2
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докажите тождество
6 задание
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Universalka
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6) tga/ (tga + ctga) = Sina/Cosa : (Sina/Cosa + Cosa/Sina) =
= Sina/Cosa : [(Sin²a + Cos²a) / Sina*Cosa] = Sina/Cosa * Sina *Cosa = Sin²a
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nezandenzar
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Answers & Comments
Verified answer
6) tga/ (tga + ctga) = Sina/Cosa : (Sina/Cosa + Cosa/Sina) == Sina/Cosa : [(Sin²a + Cos²a) / Sina*Cosa] = Sina/Cosa * Sina *Cosa = Sin²a
Verified answer