Question

Cum se calculeaza distanta de la un punct A(-3;-4) la originea reperului cartezian?

Answer 1

Aplici formula distantei:
AB=$\sqrt{(xA-xB)^{2}+(yA-yB)^{2}}$
In cazul tau B=O
deci xB=yB=0
AB=$\sqrt{3^{2}+4^{2}}$=$\sqrt{25}$=5