scalaire.py

Created by anaali

Created on March 13, 2023

316 Bytes

'''u.v=1/2(||u+v||**2-||u**2||-||v||**2)
u.v=1/2(||u||**2+||v**2||-||u-v||**2) 
u.v=(AB**2)-(AC**2)-(BC**2)
u.v=1/2(||u+v||**2-||u-v||**2)

n(a;b)
u(-b;a)

mAB:( xM=(xA+xB)/2
     yM=(yA+yB)/2 )

colinéaritée 
det(u,v)=xy'-x'y

cos(A)=(b2+c2-a2)/2bc
cos(B)=(a2+c2-b2)/2ac
cos(A)=(a2+b2-c2)/2ab'''