**TI82** TxtView file generated by CalcText - Kouriz ktrigoki˙proutAngles deg/rad: 30=Pi/6 45=Pi/4 60=Pi/3 90=Pi/2 120=2Pi/3 135=3Pi/4 150=5Pi/6 180=Pi 210=7Pi/6 225=5Pi/4 240=4Pi/3 270=3Pi/2 300=5Pi/3 315=7Pi/4 330=11Pi/6 360=2Pi Angles associés: Opposés: cos(-x)=cos(x) sin(-x)=-sin(x) Complementaires: cos(pi/2-x)=sin(x) sin(pi/2-x)=cos(x) Supplementaires: cos(pi-x)=-cos(x) sin(pi-x)=sin(x) Autres: cos(pi+x)=-cos(x) sin(pi+x)=-sin(x) cos(pi/2+x)=-sin(x) sin(pi/2+x)=cos(x) Formules d'addition: cos(a+b)=cos(a)cos(b)-sin(a)sin(b) sin(a+b)=sin(a)cos(b)+sin(b)cos(a) cos(a-b)=cos(a)cos(b)-sin(a)sin(b) sin(a-b)=sin(a)cos(b)-sin(b)cos(a) Formules de duplication: cos2a=cos˛a-sin˛a =1-2sin˛a =2cos˛a-1 sin2a=2sin(a)cos(a) Angles particuliers: Cosinus: 0=1 Pi/6=rac(3/2) Pi/4=rac(2/2) Pi/3=1/2 Pi/2=0 Sinus: 0=0 Pi/6=1/2 Pi/4=rac(2/2) Pi/3=rac(3/2) Pi/2=1˙?ó