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WAEC Mathematics 1994 Question 26

Question 26

Circle Theorems

The angle subtended at the centre by a chord of a circle radius 6cm is 120°. Find the length of the chord.

  1. A.3cm
  2. B.6cm
  3. C.4√2cm
  4. D.3√3cm
  5. E.6√3cm
Show the answer and explanation

Answer: E (6√3cm)

Explanation

Half the chord = 6 sin 60° = 3√3 cm, so the chord = 6√3 cm.