Chapter 3
Find the radian measures corresponding to the following degree measures: (i) 25° (ii) - 47°30′ (iii) 240° (iv) 520°
Find the degree measures corresponding to the following radian measures (Use 22π 7= ). (i) 11 / 16 (ii) - 4 (iii) 5π / 3 (iv) 7π
A wheel makes 360 revolutions in one minute. Through how many radians does it turn in one second?
Find the degree measure of the angle subtended at the centre of a circle of radius 100 cm by an arc of length 22 cm (Use 22π 7= ).
In a circle of diameter 40 cm, the length of a chord is 20 cm. Find the length of minor arc of the chord.
If in two circles, arcs of the same length subtend angles 60° and 75° at the centre, find the ratio of their radii.
Find the angle in radian through which a pendulum swings if its length is 75 cm and th e tip describes an arc of length (i) 10 cm (ii) 15 cm (iii) 21 cm