I work in the defense industry, writing software for both fielded systems and the modeling and simulation used to define and design such systems. I constantly use algebra, trigonometry, FFTs, logarithms, complex mathematics, statistics, probability, and a bit of calculus underlying many of the models. I do a fair amount of data analysis, which has me thinking about the various ways to condense and display data.
My coworkers who can't understand the math are relegated to building UIs and writing messaging interfaces. Those of us who can understand the math create all the underlying code doing the real work. The former are much more likely to be viewed as replaceable and laid off in the bad times.