A chord of a circle is equal to its radius. The angle subtended by this chord at a point on the circumference is
A. 80°
B. 90°
C. 60°
D. 30°
Answer: Option D
Solution (By Examveda Team)
∵ OA = AB = OB (given)
∴ ΔAOB is equilateral triangle
So,
∠AOB = ∠OAB = ∠ABO = 60°
∵ ∠ACB = $$\frac{1}{2}$$ ∠AOB
= $$\frac{1}{2}$$ × 60°
= 30°
This Question Belongs to Arithmetic Ability >> Geometry
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