Engineering Board Exam Reviewer · Circles: Arcs and Angles · medium

In a circle of radius 6, a chord subtends a central angle of 120°. Find the length of the chord.

  1. 6
  2. 10.39
  3. 12
  4. 8.49

Answer

B. 10.39

Solution

c=2r 2=2(6) 60°=6 3 10.39.

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  7. Find the length of an arc of a circle of radius 8 cm that subtends a central angle of 45°.
  8. An inscribed angle intercepts an arc of 80°. Find the measure of the inscribed angle.
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