Visualizing Radians and Arc Length

1. When the angle is set to 1 radian, what do you notice about the radius and arc length?
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2. What is the relationship between arc length, the angle (in radians) and radius?
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3. In a circle there are . How many radians is this? (Hint: think about arc length and circumference! What is the formula for circumference?)
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– Angelyn Pigg, Karen Service

Information: Visualizing Radians and Arc Length