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Julia1785
@Julia1785
July 2022
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Помогите пожалуйста !!! Упростить (sin(a- 3п/2)*cos(п+a)) / 1+cos (a- 5п/2)
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sedinalana
Verified answer
(-sin(3π/2-a)*(-cosa)/(1+cos(π/2-a))=(-sinacosa)/(1+sina)=-sin2a/[2(1+sina)]
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Verified answer
(-sin(3π/2-a)*(-cosa)/(1+cos(π/2-a))=(-sinacosa)/(1+sina)=-sin2a/[2(1+sina)]