Voir le corrigé - maths

AB = 6
\
ABC = 75◦
\
BAC = 15◦
ABC
AB = 8
\
BAC =
\
ABC = 40◦
ABC

AB = 6
\
ABC = 75◦
\
BAC = 15◦
ABC
*
o[AB]
o◦A
o◦B

ABC C
180◦15 + 75 = 90
\
ACB = 180 −90 = 90◦
AB = 8
\
BAC =
\
ABC = 40◦
ABC
*
o[AB]
o◦A
o◦B

C
ABC [AB]C
AC =AB