63^o = ___________.

-460^o lie in ___________

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

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

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

1 radian =

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

(2 4/5)^o = ______^o _______'

If π = 22/7 then the approximate value of 1 radian is

Give two concentric circles of radius 4 and r, find the value of r if two arcs of the same length on the two concentric circles subtend angles of 45^o and 60^o at the centre.