Question

4. In a circle of radius r an arc of
length r will subtend an angle of
r radian
1 radian
2 radian
5 radian
anewer any 1​

Answer 1

1 radian is the answer for above question

Answer 2

Answer:

The length L of an arc subtending an angle θ at the centre of the circle of radius r is given by

circumference

L

=

2π

θ

2πr

L

=

180×2π

θπ

⟹L=

180

πrθ

Hence, option D is correct