[seqfan] Re: More [cons] Proposals

[israel at math.ubc.ca]

More generally, 

arccos(3*y-4*y^3) + 3*arcsin(y) = Pi/2

for -1/2 <= y <= 1/2.

Cheers,
Robert


On Sep 8 2018, Brad Klee wrote:

>Hi Seqfans,
>
>The OEIS works well as a searchable database of mathematical constants,
>so why shouldn't we generate a few ideas for growing this type of content?
>
>Stanislov Sykora has already started on Steradian Solid Angles, nice work!
>Through solid geometry of A236555 and A236556, we discovered an identity:
>
>arccos(23/27) + 3*arcsin(1/3) = Pi/2 .