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Baltezar
@Baltezar
July 2022
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упростите выражение 1-cos2x
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sedinalana
Verified answer
1-cos2x=sin²х+cos²х-cos²x+sin²x=2sin²x
или
1-(1-2sin²x)=1-1+2sin²x=2sin²x
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Answers & Comments
Verified answer
1-cos2x=sin²х+cos²х-cos²x+sin²x=2sin²xили
1-(1-2sin²x)=1-1+2sin²x=2sin²x