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Mariondu59
@Mariondu59
April 2019
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Bonjour
Il faut rzsoudre dans R les equations suivantes merci de m'aider
1)cosx= -1/2 j'ai trouve pie/3+2K pie
2)sinx=-1/2
3)cosx=cos(2pie/5)
4)sinx=sin(2pie/7)
Merci
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matmgn
Bonjour
1) cos x =-1/2 : x=2pi/3+2k pi ou x=-2pi/3+2k pi
2) x=7pi/6+2k pi ou x=-pi/6+2k pi
3) x=2pi/5+2k pi ou x=-2pi/5+2k pi
4) x=2pi/7+2k pi ou x=5pi/7+2k pi
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1) cos x =-1/2 : x=2pi/3+2k pi ou x=-2pi/3+2k pi
2) x=7pi/6+2k pi ou x=-pi/6+2k pi
3) x=2pi/5+2k pi ou x=-2pi/5+2k pi
4) x=2pi/7+2k pi ou x=5pi/7+2k pi