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 ?

40 degree 60 degree 30 degree 50 degree

60 degree

Length of chord = L = 2rsin\(\theta \) = r sin\(\theta \) = \(\frac{1}{2}\) Therefore, \(\theta \) = \({30}^\circ\) Angle subtended by chord at center = 2\(\theta \) = \({60}^\circ\).