Question 7 Find the angle in radian though 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
Class X1 - Maths -Trigonometric Functions Page 55
Answers
Answered by
74
Concept :- ∅ = L/R
Where ∅ is the angle subtended at the centre. L is the arc length of circle . R is the radius of circle.
(a) L = 10cm, R = 75cm
∅ = 10/75 = 2/15 rad
(b) L = 15cm, R = 75cm
∅ = 15/75 = 1/5 rad
(c) L = 21cm , R = 75 cm
∅ = 21/75 = 7/25 rad
Answered by
2
Answer:
1/5c
Step-by-step explanation:
GIVEN. r=75cm, l=15cm,thetha=?
l=r thetha
thetha=l/r
=15/75
thetha= 1/5c
Similar questions