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 60^@ and 75^@ at the centre, find the ratio of their radii.

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