What-is-the-length-of-chord-in-a-circle-of-radius-r-which-divides-the-circumference-of-circle-in-m-n-

Question Number 5626 by Rasheed Soomro last updated on 23/May/16

What is the length of chord in a circle of

radius r which divides the circumference of circle in m : n ?

Answered by mrW last updated on 17/Nov/16

θ = 2 π \cdot \frac{m}{m + n}

L = 2 \cdot r \cdot \sin (θ / 2) = 2 \cdot r \cdot \sin (\frac{m π}{m + n})

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