AMC / AIME · Circle Geometry · Medium
Circle Geometry: Two radii form a math sector of radius math. Find the arc length in terms of math.
Chords, arcs, angles.
Try the problem
Two radii form a sector of radius . Find the arc length in terms of .
Hint and answer
Concept to use
Inscribed angles.
Hint
Draw the radii and use perpendicular/chord or angle theorems.
Answer
4\pi
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