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Anaismamy
@Anaismamy
April 2019
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En utilisant les formules d'addition,calculer:
cos
/8 et sin
/8
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bernardditbidou
Les formules sont cos(a+b)=cosa*cosb-sina*sinb
et sin(a+b)=sina*cosb+sinb*cosa
je cherche les transformations possibles de π/8
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Simplifier l'expression suivante:sin a - sin bsin a + sin b
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et sin(a+b)=sina*cosb+sinb*cosa
je cherche les transformations possibles de π/8