Question

What is the length of the arc subtended by the central angle of `240^circ`, when such arc is located on the Unit Circle?

Answer 1

The length of the arc is `4.19(2dp)` unit .

Explanation:

The circumference of unit circle `(r=1)` is `2*pi*r=2*pi*1=2*pi` unit

The length of the arc subtened by central angle of `240^0` is `l_a=2*pi*240/360 ~~ 4.19(2dp)`unit . [Ans]