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elnur4523
@elnur4523
August 2022
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Решите тригонометрическое уравнение плиз
cos3x+sinxsin2x=0
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ФРЕМА
Cos3x+sinxsin2x=0
cosxcos2x-sinxsin2x+sinxsin2x=0
cosxcos2x=0
cosx=0
x=pi/2+pin
cos2x=0 2x=pi/2+pin x+pi/4+pin/2
3 votes
Thanks 1
elnur4523
что за формула?
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Answers & Comments
cosxcos2x-sinxsin2x+sinxsin2x=0
cosxcos2x=0
cosx=0
x=pi/2+pin
cos2x=0 2x=pi/2+pin x+pi/4+pin/2