# Golden Ratio plus 1 [closed]

There was an interesting puzzle by Presh Talwalker in 'MindYourDecisions' about finding the radius of a circle that was cotangent to two larger circles.

• This is very interesting! I strongly recommend you also post this on the Mathematics Stack Exchange (Math.SE). Anything new discovered that contains a special constant such as the golden ratio $\varphi$ should probably be checked out by math experts, which although there are plenty on this site, there are (much) more on Math.SE. $(+1)$ $\color{darkorange}{\bigstar}$ :D – Mr Pie Oct 13 '18 at 13:26