two parallel chords are drawn on the same side of the centre of circle of radius r. it is found that they subtend an angle of 2A and A at the centre of the circle. Then find the perpendicular distance between two chords
two parallel chords are drawn on the same side of the centre of circle of radius r. it is found that they subtend an angle of 2A and A at the centre of the circle. Then find the perpendicular distance between two chords










