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Nijika
@Nijika
May 2019
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Si quelqu’un pouvais m’aider.. svp
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ProfdeMaths1
Verified answer
Cos(2001π/4)=cos(π/4)=√2/2
sin(2001π/4)=sin(π/4)=√2/2
cos(199π/6)=cos(-π/6)=√3/2
sin(199π/4)=sin(-π/6)=-1/2
cos(-77π/3)=cos(π/3)=1/2
sin(-77π/3)=sin(π/3)=√3/2
cos(-41π/2)=cos(-π/2)=0
sin(-41π/2)=sin(-π/2)=-1
cos(106π)=cos(0)=1
sin(106π)=sin(0)=0
1 votes
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Nijika
Merci beaucoup mais justement comment trouve tu l’angle pour pouvoir calculer le cosinus
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Verified answer
Cos(2001π/4)=cos(π/4)=√2/2sin(2001π/4)=sin(π/4)=√2/2
cos(199π/6)=cos(-π/6)=√3/2
sin(199π/4)=sin(-π/6)=-1/2
cos(-77π/3)=cos(π/3)=1/2
sin(-77π/3)=sin(π/3)=√3/2
cos(-41π/2)=cos(-π/2)=0
sin(-41π/2)=sin(-π/2)=-1
cos(106π)=cos(0)=1
sin(106π)=sin(0)=0