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Mandeny16
a fost răspuns

Teorema catetei : a) daca DC/BC = 1/4 si AC =6cm calculati BC si AB.
b) daca BD/DC =2/7 si BC =18 CM CALCULATI BD , DC , AB AC. AJUTATI-MA VA ROG :(((((((

Răspuns :

Renatemambouko
DC/BC=1/4
DC=k
BC=4k
AC=6
6²=k x 4k=4k²
4k²=36
k²=9
k=3
DC=k=3
BC=4k=4*3=12
BD=12-3=9
AB=√9*12=√108=6√3

b)BD/DC=2/7
BD=2k
DC=7k
BC=18
2k+7k=18
9k=18
k=2
BD=2k=2*2=4
DC=7k=7*2=14
AB=√4*18=√72=6√2
AC=√14*18=√252=6√7