In a circle of radius 12cm a chord is drawn 3cm from the centre. Calculate the angle subtended by the chord at the centre

Answer 1

Draw the circle and chord.
Draw a radius perpendicular to the chord.
You can see that
cos(θ/2) = 3/12

Answer 2

calculate the angle and findthe area of the sector

Answer 3

In a circle of radius 12cm a chord is drawn 3cm from the center cal the angle subtended by the chord at the centre