Suggestions for Trig

The following packages have something in common with the package Trig. The packages are ordered in decreasing similarity.

Package calc: Simple arithmetic in LaTeX commands
Package color: Colour control for LaTeX documents
Package keyval: Process key=value schemes
Package epsfig: Include Encapsulated PostScript in LaTeX documents
Package graphics: Standard LaTeX graphics
Package graphicx: Enhanced support for graphics
Package lscape: Place selected parts of a document in landscape
Package rotating: Rotation tools, including rotated full-page floats
Package papermas: Compute the mass of a printed version of a document
Package amstext: Typeset text fragments in mathematics
Package multicol: Intermix single and multiple columns
Package tabularx: Tabulars with adjustable-width columns
Package amsopn: Typeset mathematical operator names
Package amscd: AMS-LaTeX commutative diagrams
Package latexbug: Bug classification for LaTeX related bugs
Package fibnum: Generate Fibonacci numbers
Package thepdfnumber: Print PDF numbers with minimal digits
Package bxcalc: Extend the functionality of the calc package
Package didec: Fixed-point arithmetic with two decimal places
Package xfp: Interface to the LaTeX3 floating point unit
Package bnumexpr: Extends eTeX’s \numexpr...\relax construct to big integers
Package bigintcalc: Integer calculations on very large numbers
Package calculator: Use LaTeX as a scientific calculator
Package intcalc: Expandable arithmetic operations with integers
Package luarandom: Create lists of random numbers
Package numerica: Numerically evaluate mathematical expressions in LaTeX form
Package numerica-tables: Create multi-column tables of mathematical functions
Package pst-calculate: Support for floating point operations at LaTeX level
Package fp: Fixed point arithmetic
Package lcg: Generate random integers
Package numerica-plus: Iteration and recurrence relations: finding fixed points, zeros and extrema of functions