Question

(5)
Tu
Two arcs of the same lengths subtend
angles of 60° and 75º at the centres of
two circles. What is the ratio of radii of
two circles ?​

Answer 1

Answer:

Step-by-step explanation:theta=arc/radius

IN case of first circle,it is

60=x/r1  ,........................(1)

on assuming the arc length to be x and radius to be r1

In case of second circle,

75=x/r2......................(2)

assuming the radius to be r2

(1)÷(2)=60/75=r2/r1

on simplifying,we get r1:r2=5:4

      hope this helps..........;p