NCERT Class XI Mathematics - Trigonometric Functions - Solutions
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Question : 4
Total: 61
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 π = 22/7)
Solution:
Let O be the centre and AB be the arc length of the circle.
l = AB = 22 cm, r = OA = OB = 100 cm
θ =(
) c (
) c
=(
×
) °
l = AB = 22 cm, r = OA = OB = 100 cm
θ =
=
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