Question

Ponusun!
(ii) Express in radians as well as in degrees the angle of a regular polygon of 10
9. The number of sides of two regular polygons are as 5 : 4 and the difference h
their angles is 9º. Find the number of sides in the polygons.
10. Show that the minute hand of a watch gains 5° 30' on the hour hand in a minute
11. Find the degree measure of the angle subtended at the centre of a circle of di
200 cm by an arc of length 22 cm. (Use a = 22/7).
12. A wire 121 cm long is bent so as to lie along the arc of a circle of radius 180 cm
in degrees, the angle subtended at the centre by the wire.
13. A cow is tied to a post by a rope 30 m long. If the cow moves along the circum
of a circle always keeping the rope tight, how far will it have gone when the ro
traced an angle of 105°.
14. Find the ratio of the radii of two circles at the centres of which two equal arcs s
angles of 30° and 70°.
15. A railway train is travelling on a curve of 1500 m
Through what angle will it turn in 20 seconds ?
radius at the rate of 66
6. Meerut is 64 km from Delhi. Find the angle (in
the earth by the arc joining these two towns. The earth is regarded as a sp
elhi. Find the angle in degrees) subtended at the ce
6336 km radius.
7. The larger hand of a clock is 42 cm. lor
move in 20 minutes.
​

Answer 1

what do you want in this question