If the arc length of a sector in the unit circle is 4.2, what is the measure of the angle of the sector?

 4.2 radian or  

Step-by-step explanation:

Let represents the measure of the angle of the sector.

We know that in a unit circle , the radius = 1 unit

The formula to calculate the length of arc of sector is given by :-

Then , the measure of the angle of the sector is given by :-

In degrees , the measure of the angle of the sector will be :-

1.true 2.false? ? i think. .

step-by-step explanation:

linear pair postulates