Answer:
5 feet.
Step-by-step explanation:
i) Adam walks 3 feet north
ii) Betty walks 4 feet west.
iii) We know that the angle between north and west is 90 degrees.
iv) Therefore we can say that distance Adam walks is the height of a right
angled triangle and the distance that Betty walks is the base of the right
angled triangle.
v) Therefore by using Pythogoras's Theorem we can calculate the length of
the line between Adam and Betty as shown
length of line between Adam and Betty = [tex]\sqrt{3^{2} + 4^{2} } = \sqrt{9 + 16} = \sqrt{25} = 5[/tex] feet.
