From the diagram below. ABC is a triangle inscribed in a circle center O. ∠ACB...
MATHEMATICS
WAEC 1999
From the diagram below. ABC is a triangle inscribed in a circle center O. ∠ACB = 40° and |AB| = x cm. calculate the radius of the circle.
- A. \(\frac{x}{sin 40^o}\)
- B. \(\frac{x}{cos 40^o}\)
- C. \(\frac{x}{2 sin 40^o}\)
- D. \(\frac{x}{2 cos 40^o}\)
Correct Answer: C. \(\frac{x}{2 sin 40^o}\)
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