NCERT Class XI Mathematics - Trigonometric Functions - Solutions
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Question : 7
Total: 61
Find the angle in radian through which a pendulum swings if its length is 75 cm and the tip describes an arc of length
(i) 10 cm (ii) 15 cm (iii) 21 cm
(i) 10 cm (ii) 15 cm (iii) 21 cm
Solution:
(i) r = 75 cm, l = 10 cm ⇒ θ =
(ii) l = 15 cm, r = 75 cm ⇒ θ =
(iii) l = 21 cm, r = 75 cm ⇒ θ =
(ii) l = 15 cm, r = 75 cm ⇒ θ =
(iii) l = 21 cm, r = 75 cm ⇒ θ =
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