Submitted by Edogowa Conan on Tue, 11/22/2016 - 15:19
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In step 1 1987 q2, how do I find the relationship between n, R and r.
Submitted by Edogowa Conan on Tue, 11/22/2016 - 15:19
In step 1 1987 q2, how do I find the relationship between n, R and r.
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Consider the regular $n$
Consider the regular $n$-sided polygon with vertices that are the centres of the small circles. You might find it helpful to draw a diagram with an apothem drawn.