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Hahahaharin
@Hahahaharin
July 2022
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упростите выражение sin4α * cos2α - sin2α cos4α + cos(π/2 -2α).
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sedinalana
Verified answer
Sin4acos2a-sin2acos4a+cos(π/2-2a)=sin(4a-2a)+sin2a=sin2a+sin2a=
=2sin2a
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Verified answer
Sin4acos2a-sin2acos4a+cos(π/2-2a)=sin(4a-2a)+sin2a=sin2a+sin2a==2sin2a