### Home > INT3 > Chapter 9 > Lesson 9.1.4 > Problem 9-46

9-46.

The measure of ∠

*ROS*in Δ*ROS*below is 60º. Homework Help ✎

The curved arrow represents the rotation of

*OR*, beginning from the positive*x*‑axis. Through how many degrees has*OR*rotated?If

*OR*= 1, what are the*exact*lengths of*OS*and*SR*?What are the

*exact*coordinates of point*R*?

Remember that a whole circle is 360°.

Remember the 30°-60°-90° triangle.