If in two circles, arcs of the same length subtend angles `60^@`and `75^@`at the centre, find the ratio of their radii.

If in two circles, arcs of the same length subtend angles 60^(@)and75^(@) at the centre, find the ratio of their radii.

If in two cirlces arcs of the same length subtend angles 60^(@) and 75^(@) at the centre, find the ratio of their radii.

If in two circles, arcs of the same length substend angles 60^(@) and 75^(@) at the centre, find the ratio of their radii.

If in two circles, arcs of the same length substend angles 60^(@) and 75^(@) at the centre, find the ratio of their radii.

If two circles arc of the same length subtend angles 60^@ and 75^@ at the centre , Find the ratio of their radii.

If in two circles, arcs of same length subtend angles 60^(@) and 75^(@) at the centre, find the ratio of their radii?

If in two circles, arcs of the same length subtend angles 60o and 75o at the centre, find the ratio of their radii.

If in two circles, arcs of the same length subtend angles 60o and 75o at the centre, find the ratio of their radii.

If in two circle arcs of the same length subtend angle of 60^(@) and 75^(@) at the center , find the ratio of their radii.

If in the two circles, arcs of the same length subtend angles 30^0 and 40^o at centre, find the ratio of their radii: