circular measure of 22 degree 30 minutes
Answers
Answer:
TRIGONOMETRIC FUNCTIONS
EXERCISE 1 (a)
is to
carta bi me
1.
Find the radian measure corresponding to the following degree measutes :
(1) 25° (t1) - 47° 30' (ii) 240 (iv) 520°
Find the degree measures corresponding to the following radian measures
2.
(0) 1
(1) - 4 (in s
(iv)
(Use a = 22,
3. In a right angled triangle, the difference between the two acute angles is in
circular measure. Express, the angles in degrees.
4 .A wheel makes 180 revolutions in one minute. Through how many radians does
it turn in one second ?
5. Find the angle in radians through which a pendulum swims if its length is 75cm
and the tip describes an arc of length:
(1) 10 cm (it) 15 cm (int) 21 cm
(Use = 22)
6. A horse is tied to a post by a rope. If the horse moves along a circular path
always keeping the rope tight and describe 88 metres when it has traced out 72°
at the centre, find the length of the rope.
7. The minute hand of a watch is 1.5 cm long. How far does its tip move in 40
minutes ?
(Use = 3.14)
8. The large hand of a clock is 42 cm long. How many centimetres does it
extremity move in 20 minutes ?
9. If in two circles, arcs of the same length subtend angles of 609 and 759 at the
centre, find the ratio of their radii.
10. Find the angle between the minute hand of a clock and the hour band when the
time is 7-20.