11 Mar
2010
11 Mar
'10
6:41 p.m.
On 3/11/10, Richard Guy <rkg@cpsc.ucalgary.ca> wrote:
No-one seems to have mentioned the Euclid theorem T^2=AB explicitly. Isn't that a complete solution? R.
Not entirely --- you also need Andy's observation that the tangent circle minimises the radius, so maximising the angle. WFL