A super-duper simple command line calculator that is fast and easy to use. Command Line Calculator supports most common mathematical expressions such as sin, cos, tan, log, exp, random number generation, etc.
This contains a list of all functions available (too many): https://www.autoitscript.com/autoit3/docs/functions.htm
This contains a list of just the math functions, but the links don't work. Use it to see a smaller list of just math functions and then find the function in the link...