In a circle of diameter 40 cm, the length of a chord is 20 cm. The length of the minor arc of the chord is
20 1/21 cm
20 20/21 cm
20 3/5 cm
21 20/21 cm
In which quadrant 800o lies ?
I
II
III
IV
The circular measure of two angles of a triangle are 1/2 radian and 1/3, radian. What is the number of degrees in the third angle ?
132o 16' 21 9/11"
- 132o 16' 21 9/11"
123o 16' 21"
None of these
In which quadrant -120o lies ?
Taking the sun’s distance as 1.4950 x 108 km and the angle subtended by the sun at a point on earth as half a degree. Approximately, the diameter of the sun is
1.304637 x 10 7 km
1.304637 x 10 6 km
1.403367 x 10 6 km
1.340637 x 10 6 km
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
The radian measure of 240o is
(4π) c
The circular system of 104o 36’ is
900 π radians
900/523 π radians
523/900 π radians
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
Find in radians the angle of a regular octagon.
4/3 π radian
3/4 π radian
2/3 π radian
3 π radian
