On 04/08/2013 04:50 AM, Bald Eagle wrote:
>> http://mathworld.wolfram.com/Circle-CircleIntersection.html>> I'm having a hard time getting from 7 to 8.
Sqrt(k / 4 d^2) = Sqrt(k) / Sqrt(4 d^2).
Sqrt(4 d^2) = Sqrt(4) Sqrt(d^2) = 2 d.
2 * Sqrt(k) / 2 d = Sqrt(k) / d = (1/d) Sqrt(k).
Simples.
[He says after spending 20 minutes figuring it out himself...]
