Question

am nevoie repede va rog
dau coroana ​

Answer 1

Răspuns:

Explicație pas cu pas:

8)

sin ∡ACB=1/2

sin 1/2=30°

m∡ACB= 30°

m∡ABC= 90°-30°=60°

cos60°=1/2

cos ∡ABC= 1/2 (D)

-

9)

MN,NP,MP - linii mijlocii in ΔABC

AB=BC/2

MP= AC/2

NP= AB/2

-

P= MN+NP+MP

P= BC/2+AB/2+AC/2

P= (BC+AB+AC)/2

P=96/2

P= 48 cm (B)