Réponses

2013-06-03T12:51:18+02:00

a)

tg35°=x/8

x=tg35°*8=5,6

x=5,6

 

b)

sin50°=6/x

x=6/sin50°

x=7,8

 

d)x²=5²+12²

x=v25+144=12

x=13