[Koshkin]

These may be (and in fact they are) excellent books, but they do not necessarily answer the needs of a designer (rather, an engineer), nor they may be suitable for people why are just learning elementary geometry and trigonometry.

Also, there are topics in mathematics that may be more relevant to a software engineer or a designer, such as algebra (in general, and linear algebra in particular).

[nikki93]

In my experience yes, linear algebra, graph theory, a little topology, category theory are pretty good. If you do raymarching rendering of scalar distance fields, a new form of rendering I'm currently interested in, there are forms of math different from traditional forward rendering that gives you superpowers: http://iquilezles.org/www/articles/distfunctions/distfunctio...