NCERT class 11 maths chapter 3 Trigonometric Functions
Question 1:Find the radian measures corresponding to the following degree measures: (i) 25° (ii) – 47°30¢ (iii) 240° (iv) 520° 2 . Find the degree measures corresponding to the following radian measures (Use 22 7 = ). (i) 11 16 (ii) – 4 (iii) 5 3 (iv) 7 6
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Question 3:A wheel makes 360 revolutions in one minute. Through how many radians does it turn in one second?
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Question 4: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 22 7 = ).
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Question 5:In a circle of diameter 40 cm, the length of a chord is 20 cm. Find the length of minor arc of the chord.
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Question 6:If in two circles, arcs of the same length subtend angles 60° and 75° at the centre, find the ratio of their radii.
Question 7: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
