In a circle of diameter 40 cm the length of a chord is 20 cm.Then the length of the minor arc corresponding to the chord is

Express in radians, the measure of the internal angles of a pentagon

π/3 radians =

The angle between two hands when the time is 11: 59

The angle between two hands when the time is 7.20

80^o 33' 20'' = ____________.

If the arcs of the same length in two circles subtend angles of 60^o and 75^o at the centre then the ratio of their radii is

63^o = ___________.

1 radian =

-460^o lie in ___________