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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

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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

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Solution:

(i) r = 75cm

length of arc, l = 10cm

The angle Ѳ =?

We know that,

cbse ncert eleven math trigonometric functions 24

(ii)

r = 75cm

length of arc, l = 15cm

The angle Ѳ =?

We know that,

cbse ncert eleven math trigonometric functions 25

(iii)

r = 75cm

length of arc, l = 21cm

The angle Ѳ =?

We know that,

cbse ncert eleven math trigonometric functions 2

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