Question

va rog mult numai sa fie corect,am nevoe urgent. ..... ​

Answer 1

Răspuns:

Salut

Exercitiul 4.

m(<B)=m(<C)

m(<A)=180°-50°-50°=

m(<A)=180°-100°=

m(<A)=80°

Exercitiul 5.

a)AD=6cm

BC=2•6=12cm

AB=12sin30°=12 •1/2=6cm

AC=12 cos30°=12• √3/2=6√3cm

AB+BC+AC=6+6√3+12=18+6√3

b)BA=AO=6

OB=2AB=BC=12

∆BOC=P=3•12=36 cm.

==evergreen==