What is the arclength between two points on a curve? How does it differ from the distance?

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Answer & Explanation

Monserrat Cole

Monserrat Cole


2022-07-08Added 12 answers

For the points (-1, 0) and (1, 0)
the distance between the points (the length of the straight line joining them) is 2.
The length of the arc on the unit circle: x 2 + y 2 = 1 is half the circumference, so it
is π . (More completely, the lengths of both the upper and lower arcs are π .)

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