When measuring angles, how many degrees is one radian equal to?

One radian is defined as the angle subtended at the center of a circle by an arc whose length is equal to the radius of the circle. To convert radians to degrees, you can use the relationship between degrees and radians, which is based on the circumference of a circle.

A full circle is 360 degrees, and the circumference of a circle is equal to (2\pi r) (where (r) is the radius). Since one complete revolution (or full circle) corresponds to (2\pi) radians, the conversion from radians to degrees can be summarized with the formula:

[

\text{Degrees} = \text{Radians} \times \frac{180^\circ}{\pi}

]

When you apply this formula to convert 1 radian to degrees:

[

1 \text{ radian} = 1 \times \frac{180^\circ}{\pi} \approx 57.3^\circ

]

This calculation shows that one radian is approximately equal to 57.3 degrees, which aligns with the selected answer. Understanding the relationship between radians and degrees is crucial in engineering applications and physics when dealing with angular measurements.

Other options provide either incorrect degree values