Question

Find the degree measure of the angle subtended at the centre of a circle of
diameter 60 cm by an arc of length 16.5 cm.
​

Answer 1

Answer:

Step-by-step explanation:

θ=l/r

=16.5/30

=0.55

diameter =60 cm radius -30 cm

1 radian=180/π

0.55 radians=0.55*180/π

=31.5

Thus the degree measures of the angle subtended at the centre of the circle is  31 degress 5'

Answer 2

Answer:We have the formula Φ=l/r

So, Φ(in radian)=16.5/30

        =11/20radian

  Now, We convert it Into degree

 So, Φ=[(11/20)*(180/π)]degree

          =(11*180*7)/(20*22)

           =63/2

           =31degree30mi