Table of Contents
Trig Cheat Sheet
Trig Cheat Sheet: Trigonometry is the study of triangles, which contain angles, of course. 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.
Definition of the trig functions
Right Triangle Definition
Unit Circle Definition
Domain
Range | Trig Cheat Sheet
Period | Trig Cheat Sheet
Tangent and Cotangent Identities | Trig Identities Cheat Sheet
Reciprocal Identities | Trig Identities Cheat Sheet
Pythagorean Identities
Even/Odd Formulas
Periodic Formulas
Double Angle Formulas
Degree to Radians Formulas
As you study trig, you’ll find occasions when you need to change radians to degrees, or vice versa. A formula for changing from degrees to radians or radians to degrees is:
Half Angle Formulas
Sum and Difference Formulas
Product to Sum Formulas Cheat Sheet
Sum to Product Formulas Cheat Sheet
Cofunction Formulas Cheat Sheet
Unit Circle
Inverse Trig Functions
