8.74.3 Can you answer these questions?

8.74.3.1 Problem with Euler Angle (Tikzpicture3d)
8.74.3.2 kpsewhich not found when installing texlive
8.74.3.3 custom tagging for authors and affiliations when converting to HTML using htlatex
8.74.3.1 Problem with Euler Angle (Tikzpicture3d)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=665070

I'm willing to create a similar graph as this one: 
I've tried the first figure rotation, and the result was pretty cool: 
Here's its code: 
\documentclass[tikz,border=10mm]{standalone} 
\usepackage{... 
[tikz-pgf] [diagrams] [tikz-3dplot]
 
asked by Court_Compilation https://tex.stackexchange.com/landing/r/digest?cta=user&id=272381 Score of 3
8.74.3.2 kpsewhich not found when installing texlive

https://tex.stackexchange.com/landing/r/digest?cta=question&id=664548

On arch linux. 
This results in having no pdflatex command 
(1/1) checking keys in keyring                                                                    [############################################... 
[kpsewhich]
 
asked by bliss-and-bless https://tex.stackexchange.com/landing/r/digest?cta=user&id=282079 Score of 1
8.74.3.3 custom tagging for authors and affiliations when converting to HTML using htlatex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=664928

I am trying to convert to HTML using tex4ht without luck. The following is what I have got so far: 
sample.tex 
%https://elife-cdn.s3.amazonaws.com/author-guide/elife-latex-template.zip 
\documentclass[... 
[tex4ht] [htlatex] [make4ht]
 
asked by Parivalavan https://tex.stackexchange.com/landing/r/digest?cta=user&id=270105 Score of 1
answered by michal.h21 https://tex.stackexchange.com/landing/r/digest?cta=user&id=2891 Score of 0