Introduction to Trigonometry  Math is Fun
The main functions in trigonometry are Sine, Cosine and Tangent. They are simply one side of a rightangled triangle divided by another. For any angle "θ": (Sine, Cosine and Tangent are often abbreviated to sin, cos and tan.)
Trigonometry  Wikipedia
Trigonometry (from Ancient Greek τρίγωνον (trígōnon) 'triangle' and μέτρον (métron) 'measure') is a branch of mathematics concerned with relationships between angles and side lengths of triangles.
Trigonometry  Khan Academy
Learn trigonometry—right triangles, the unit circle, graphs, identities, and more.
Trigonometry  Definition, Formulas, Ratios, & Identities
Trigonometry, the branch of mathematics concerned with specific functions of angles. There are six functions commonly used in trigonometry: sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and cosecant (csc). Learn more about trigonometry in this article.
Trigonometry (Functions, Table, Formulas & Examples)  BYJU'S
Trigonometry is a branch that delas with the study of the relationship between sides and angles of a right triangle. Visit BYJU’S to learn the trigonometry formulas, ratios, tables, functions and examples.
Trigonometry  What is Trigonometry? Formulas, Table, Examples  Cuemath
Trigonometry is the branch of mathematics that deals with the relationship between ratios of the sides of a rightangled triangle with its angles. The ratios used to study this relationship are called trigonometric ratios, namely, sine, cosine, tangent, cotangent, secant, cosecant.
Trigonometric equations and identities  Trigonometry  Khan Academy
In this unit, you'll explore the power and beauty of trigonometric equations and identities, which allow you to express and relate different aspects of triangles, circles, and waves.
Trigonometric functions  Algebra (all content)  Khan Academy
This topic covers: Unit circle definition of trig functions. Trig identities. Graphs of sinusoidal & trigonometric functions. Inverse trig functions & solving trig equations. Modeling with trig functions.
Trigonometry  Math.net
Trigonometry (named based on a Greek word that loosely translates to "measurement of triangles") is a branch of mathematics that studies the relationships between the sides and angles of triangles. Trigonometry has many practical applications and is used in astronomy, surveying, navigation, and more.
1.3: Basic Trigonometric Functions  Mathematics LibreTexts
Trigonometry is the study of the relationships between the sides and angles of right triangles. The legs are called adjacent or opposite depending on which acute angle is being used. Figure \(\PageIndex{1}\)
