Question

11.Determinati lungimea segmentului AB,daca,intr-un sistem de axe ortogonale,puncteleA si B au coordoanele:
b)A(-3,10)Ș B(2,-2)
c)A(4,5),B(4,-1)

Answer 1

$a)AB= \sqrt{(2+3)^{2}-(-2-10)^{2} } = \sqrt{5^{2}+12^{2}}= \sqrt{169} }=13 \\ b))AB= \sqrt{(0)^{2}-(-1-5)^{2} } = \sqrt{6^{2}}=6$