seven trigonometric wonderz

http://math.berkeley.edu/~stankova/MathCircle/Joyce/trig/node3.html

Inequalities and Triangles - Berkeley Math Circle

https://tantalus.questu.ca/~rhoshino/

http://mathophilia.com/of-baseball-and-earthquakes/

*His BIG picture (listen audio):

life is service!

Do all the good you can.
By all the means you can.
In all the ways you can.
In all the places you can.
At all the times you can.
To all the people you can.
As long as ever you can.

jai math ji!

with best wishes,

lsnbsquare-motherindia.