Réponses

2013-05-25T20:08:20+02:00

Â

sinÂ=10/14=0.714

Â=45°

AB

sin C=AB/4

 

AB=0,57*4=2.28

AB=2.3cm

 

 

 ^D

tg D+2.3/7+0.328

^D=18°