The diagram below shows an angle, 0, graphed in the xy-coordinate plane.

Segment RT is the initial side of the angle, and segment RM is the terminal side.

Segments RT and RM are radii of the unit circle centered at the origin R(0, 0).

T

–

D

SE

The x-coordinate of point M is 1. What is the measure of 0 to the nearest

thousandth of a radian?

A

4.712

B

4.189

C

3.927

RELE

D

3.665Math