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9-46.
  1. The measure of ∠ROS in ΔROS below is 60º. Homework Help ✎

    1. The curved arrow represents the rotation of OR, beginning from the positive x‑axis. Through how many degrees has OR rotated?

    2. If OR = 1, what are the exact lengths of OS and SR?

    3. What are the exact coordinates of point R?

Remember that a whole circle is 360°.

Remember the 30°-60°-90° triangle.