Trig Cheat Sheet, Trig Identities, Inverse Trig Functions Trig Cheat Sheet Get to know some special rules for angles and various other important functions, definitions, and translations. Sines and cosines are two trig functions that factor heavily into any study of trigonometry; they have their own formulas and rules that you’ll want to understand if you plan to study trig for very long. Related searches for trigonometry cheat sheet trig identities cheat sheettrig identities sheeta-level trig formula sheettrig cheat sheettrig formula sheettrig identities pdfall trig identities pdftrig for dummies