Points (3 ,2 ) and (8 ,4 ) are ( pi)/3 radians apart on a circle. What is the shortest arc length between the points?
1 Answer
Oct 3, 2016
Explanation:
The square of distance, d, between the two points is:
d forms one side of a triangle where the other two sides are radii; this allow us the law of cosines to find the radius:
The arc length, s, is: