Question

The angle subtended at the centre of a circle of radius 4 metres by an arc of length/metre is equal to (in radian)

Answer 1

Answer:

Step-by-step explanation:

         draw the diagram,

   we can write , l = R tanФ

         then, tanФ = 1/4

Answer 2

Answer:

1/4

Step-by-step explanation:

we know, angle subtended = I/r

where I= angle lenght, r= radius

given, r=4 length of arc is 1 metre

now, tetha= I/r

=1/4