Answer:
AB = 8.06
Step-by-step explanation:
From the picture we see that Point C = ( 1, 3)
it is given as a richt sided triangle. Point C has the corner of 90 °.
so now all measures are known.
AC = 4
BC = 7
AB² = AC² + BC²
AB² = 4² + 7²
AB² = 16 + 49
AB = + - sqrt(65)
AB = 8.06
