Question

What is the measure in radians of central angle 0 in the circle below

Answer 1

For this exercise you need to use the following formula:

`\theta=(S)/(r)`

Where θ is the Central angle in radians, "S" is the arc length and "r" is the radius of the circle.

In this case, you can identify that:

Knowing these values, you can substitute them into the formula and then evaluate, in order to find the measure of the Central angle in radians. This is:

The answer is:

`\pi radians`