Question

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EXAMPLE 6
Two arcs of two different circles are of equal lengths.
arcs subtends angles of 45° and 60° at the centres of the circles
find the ratio of the radii of the two circles.​

Answer 1

Answer:

9 : 12

Step-by-step explanation:

45 : 60

using 5 table

do the cancellation

then the answer is 5 : 12

Answer 2

Answer:

3/4

Step-by-step explanation:

we know that the length of an arc is given by

S=R*X, where X= angle subtend by the arc at centre in degrees. Using this

S=A*45

S=B*60

ratio of radii=A/B=45/60=3/4