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Home > CCG > Chapter 10 > Lesson 10.2.3 > Problem 10-104

10-104.

The radian measure of a central angle of is . What must the radian measure of a central angle of be? How can you tell without actually computing the radian measure? Homework Help ✎

Since the angle is doubled, the arc length must be doubled, and in turn, the ratio of arc length to radius, or radian measure, must also double and thus be .