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moumous
@moumous
January 2021
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Bonjour vous pouvez m'aider s'il vous plaît pour ce calcul :
simplifier cos(3x)sin(2x)+sin(3x)cos(2x)
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slyz007
Verified answer
Bonjour
On sait que sin(a+b)=cosasinb+sinacosb
On applique avec a=3x et b=2x et on en déduit que
cos(3x)sin(2x)+sin(3x)cos(2x)=sin(5x)
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Verified answer
BonjourOn sait que sin(a+b)=cosasinb+sinacosb
On applique avec a=3x et b=2x et on en déduit que
cos(3x)sin(2x)+sin(3x)cos(2x)=sin(5x)