Question

In triunghiul ABC (A=1dr), AD perpendicular pe BC,avem:AD=12cm,BD=9cm.
Se cer:CD,AB,AC,BC.
Ajutorrrr...repedee

Answer 1

TREBUIE SA STII RELATIILE METRICE ,,,IN TRIUNGHI ABD APLIC TR.PITAGORA   AB²=AD²+BD²⇒AB²=12²+9²=144+81=125⇒AB=√125=5√5
TR INALTIMII NE SPUNE CA:AD²=BD*DC ⇒144=9*DC⇒DC=144÷9=16⇒BC=9+16=25
AC²=DC*BC⇒AC²=16*25=400⇒AC=√400=20
SUCCES ! INVATA TEORIA !