Question
If in two circles, arcs of the same length subtend angles $60^{\circ}$ and $75^{\circ}$ at the centre, find the ratio of their radii.
Step 1
Let an arc of length $l$ subtend an angle of $60^{\circ}$ at the center of the circle of radius $r_1$ and an arc of length $l$ subtend an angle of $75^{\circ}$ at the center of the circle of radius $r_2$. Show more…
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