Question

find the ratio of the radii of two circles at the centre of which two arcs of the same length substend and angles 75° and 60°.
$answer \: should \: be \: 30 \: degree$
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Answer 1

Step-by-step explanation:

we know that

∅= l/r

when l is constant

∅=k/r

hence ∅ is indirectly proportional to r

so,. [solve question from here it is formula]

∅1:∅2=r2:r1

r1:r2=∅2:∅1

r1:r2= 60:75

r1:r2= 4:5

hece the ratio of radius is 4:5

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