Hi. I joined and made my first Wikipedia edit on Monday October 13, 2014.
I am a mathematician specializing in recreational mathematics.
I make/solve various Mathematical puzzles.
A lovely trigonometric identity that I created:
( sin θ + csc θ ) 2 + ( cos θ + sec θ ) 2 − ( tan θ − cot θ ) 2 = 9 {\displaystyle (\sin \theta +\csc \theta )^{2}+(\cos \theta +\sec \theta )^{2}-(\tan \theta -\cot \theta )^{2}=9}