Trigonométrie Flashcards
cos(-a)
cos(a)
sin(-a)
-sin(a)
tan(-a)
-tan(a)
cos(a+PI)
-cos(a)
sin(a+PI)
-sin(a)
tan(a+PI)
tan(a)
cos(PI-a)
-cos(a)
sin(PI-a)
sin(a)
cos(a+PI/2)
-sin(a)
sin(a+PI/2)
cos(a)
cos(PI/2-a)
sin(a)
sin(PI/2-a)
cos(a)
cos(a+b)
cos(a)cos(b)-sin(a)sin(b)
cos(a-b)
cos(a)cos(b)+sin(a)sin(b)
sin(a+b)
sin(a)cos(b)+sin(b)cos(a)
sin(a-b)
sin(a)cos(b)-sin(b)cos(a)
cos(2a)
cos2(a)-sin2(a)
2cos2(a)-1
1-2sin2(a)
sin(2a)
2sin(a)cos(a)
cos2(a)
(cos(2a)+1)/2
sin2(a)
(1-cos(2a))/2
cos(a)cos(b)
1/2(cos(a+b)+cos(a-b))
sin(a)cos(b)
1/2(sin(a+b)+sin(a-b))
sin(a)sin(b)
1/2(cos(a-b)-cos(a+b))
cos(a)+cos(b)
2cos(a+b/2)cos(a-b/2)
cos(a)-cos(b)
-2sin(a+b/2)sin(a-b/2)
sin(a)+sin(b)
2sin(a+b/2)cos(a-b/2)
sin(a)-sin(b)
2cos(a+b/2)sin(a-b/2)
Formule d’Euler
cos(x)=(e^ix+e^-ix)/2
sin(x)=(e^ix-e^-ix)/2
Formule de Moivre
(cos(a)+isin(a))^n=cos(na)+isin(na)
