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P(7,-2)
Q(1,6)
Dit:
panjang vektor PQ
Jawab:
#cari dahulu vektor PQ
PQ = Q - P
PQ = (Xq-Xp, Yq-Yp)
PQ = (1-7, 6-(-2))
PQ = (-6, 8)
#cari panjang vektor PQ
|PQ| = akar (-6)^2 + (8)^2
|PQ| = akar 36 + 64
|PQ| = akar 100
|PQ| = 10
jadi panjang vektor PQ adalah 10
(6 ) (-2) (8 )