In a circle of diameter 40cm the length of a chord is 20 cm. The length of the minor arc of the chord is
20 π cm
20/3 π cm
3/2 π cm
2/3 cm
The radian measure of 25o is
πc
A train is travelling on a curve of 500 mt radius at the rate of 66 k ph. Through what angle will it turn in 20 seconds ?
12o
13o
14o
15o
The radian measure of 240o is
(4π) c
In which quadrant 800o lies ?
I
II
III
IV
The angle in radian through which a pendulum swings and its length is 75 cm and the tip describes an arc of length 21 cm is
7/25 radians
25/7 radians
7/23 radians
25 radians
A horse is tied to a post by a rope. If the horse moves along a circular path always keeping the rope tight and describes 88 metres when it has traced out 72o at the centre. Then the length of the rope is :
35 m
60 m
70 m
80 m
Find in radians the angle of a regular octagon.
4/3 π radian
3/4 π radian
2/3 π radian
3 π radian
The circular system of 104o 36’ is
900 π radians
900/523 π radians
523/900 π radians
The angle between the minute hand and the hour hand of a clock at 10.40 pm is
60o
45o
80o
40o
