In any circle prove that the chord which subtends `108^@` at the centre is equal to the sum of the two chords which subtends angle `36^@` and `60^@`

Prove that the lengths of the chord of a circle which subtends an angle 108^(@) at the centre is equal to the sum of the lenths of the chords which subtend angles 36^(@) and 60^(@) at the centre of the same circle.

What is the length of the chord which subtends 120 degress at the centre of the circle ?

Prove that equal chords of a circle subtend equal angles at the centre.

Prove Equal chords of a circle subtend equal angles at the centre.

Prove that if chords f congruent circles subtend equal angles at their centres, then the chords are equal.

What is the length of the chord of a unit circle which subtends an angle at the centre ?

Prove that if chords of congruent circles subtend equal angles at their centre then the chords are equal.

Prove that if chords of congruent circles subtend equal angles at their centres,then the chords are equal.

In a circle , chord AB subtends an angle of 60^(@) at the centre and chord CD subtends 120^(@) , at it. Then which chord is longer ?