Question

In the 2 circle, arcs of the same length subtend angles 60 and 75° at the centre. find the ratio of their radii​

Answer 1

Answer:5:4

Step-by-step explanation:

Let the arc length be l,

R1=3l/pi

R2=12l/5pi

R1/R2=3l×5pi/12l×pi=15/12=5:4

Answer 2

Answer:

We know that length of an arc is given by,

S = R*X , where X = angle subtended by the arc at center in degrees.

Using this,

S = A*60

S = B*75 ,

ratio of radii = A/B = 75/60 = 5/4

Step-by-step explanation:

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