An arc 15 feet long describes an angle of 5 radians at the centre of a circle.Then the radius of the circles is

A wheel makes 180 revolutions in one minute.Through how many radians does it turn in one second?

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

The difference between two accute angles of a right angled triangle is π/10 radians.Then the angles of traingle are

80^o 33' 20'' = ____________.

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

15^o 28' 32'' + 12^o 32' 58'' =

-460^o lie in ___________.

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

π/3 radians =