Question

solve the 5th question only
the question is
find the degree measure of the subtended at the centre of circle of radius cm by an arc of length 22 cm

Answer 1

Given radius r = 100cm, length l = 22cm.

We know that l = rФ

Then, Ф = l/r

= > 22/100

= > 0.22 radians.

Now,

We know that 1 radian = (180/π)

Then,

= > 0.22 radians

= > 0.22 * (180/π)

= > 0.22 * (180 * 7/22)

= > 180 * 7 * 0.01

= > 12.6 °

= > 12° 36'.

Hope this helps!