trig – Simple trigonometric functions

Pro­vides the trigono­met­ric func­tions sin, cos and tan, for use in the graph­ics and graph­icx pack­ages.
Be­fore any trigono­met­ric value is used, it must be pre-cal­cu­lated, so a us­age se­quence might be \Cal­cu­lateSin{22.5} ... \UseSin{22.5}; the ar­gu­ment may also be a LaTeX count, as in \UseTan{\value{my­counter}}, or a count reg­is­ter, as in \Cal­cu­lateCos{\count@}.