Length of the chord AB of a circle is equal to the radius of the circle. What will be angle subtended by the chord at the centre of the circle ?
Answer & explanation
Correct answer: option 2
Length of chord = L = 2rsin\(\theta \) = r
sin\(\theta \) = \(\frac{1}{2}\)
Therefore, \(\theta \) = \({30}^\circ\)
Angle subtended by chord at center = 2\(\theta \) = \({60}^\circ\).