cosinus_sinus.py

Created by vovenastream

Created on February 05, 2024

582 Bytes

le cercle de centre 0 de rayon 1
et muni un sens direct : le sens
inverse des aiguille une montre

elles sont proportionnelle a pi 
radians corespond a 180

la mesure de angle au centre 
interceptant un arc de la longueur
1

si seulement ils ont un ecart de 
multiple de 2 pi SSi xprime=x+2kpi

cos(x)= abscisse de M
sin(x)= ordonnee de M

propriete: 
  -1<cos(x)<1
  -1<sin(x)<1
  cos**2(x)+sin**2(x)=1
  cos(x+2pi)=cos(x)
  sin(x+2pi)=sin(x)
  
x  0;pi/6;pi/4;pi/3;pi/2;pi;3pi/2;2pi
cos1;V3/2;V2/2;V1/2;0   ;-1;0    ;1
sin0;V1/2;V2/2;V3/2;1   ;0 ;-1   ;0

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