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alicetarasenko
@alicetarasenko
July 2022
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1. Найдите значение выражения: sin(π/2+α)sin(π/2-α)-sin(π-α)cos(7п/2-α)
2. Упростите выражение: [tex] \frac{cos10sin20+cos160sin110}{sin21sin9+cos159sin99} [/tex]
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Машенька0102
=-cosL*cosL-sinL*(-sinL)=-2cosL+2sinL
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alicetarasenko
Это первое или второе задание?
Машенька0102
это первое задание.
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