If arcs of same length in two circles subtend angles of `60^0a n d75^0` at their centers, find the ratios of their radii.

If ars of the same lengths in two circles subtend angles 65^(@) and 110^(@) 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 the arcs of same lengths in two circles subtend central angle 30^(@) and 80^@ and find the ratio of their radii.

The arcs of sample in two circles subtend 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:

Find the length of normal chord which subtends an angle of 90^0 at the vertex of the parabola y^2=4xdot

The V-t graphs of two objects make angle 30^(@) and 60^(@) with the time axis. Find the ratio of their accelerations.

A piece of wire carrying a current of 6.00 A is bent in the form of a circular arc of radius 10.0 cm, and it subtends an angle of 120^@ at the centre. Find the magnetic field B due to this piece of wire at the centre.