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# In a unit circle, the radian measure of the central angle is equal to the length of the

Intercepted arc

Radius

Diameter

Circumference

**Solution:**

We know that the arc is measured using the arc length equation

s = θ r (1)

Where θ is the central angle which is measured in radians

r is the radius

If the unit circle has radius of 1 m length then we understand that arc varies directly proportional to the central angle.

Therefore, the central angle is equal to the length of the intercepted arc.

## In a unit circle, the radian measure of the central angle is equal to the length of the

**Summary:**

In a unit circle, the radian measure of the central angle is equal to the length of the intercepted arc.

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