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  1. Introduction to Trigonometry - Math is Fun

    Trigonometry: from Greek trigonon triangle + metron measure. Want to learn Trigonometry? Here is a quick summary. Follow the links for more, or...

  2. Trigonometry - Wikipedia

    Trigonometry (from Ancient Greek τρίγωνον (trígōnon) 'triangle' and μέτρον (métron) 'measure') [1] is a branch of mathematics concerned with relationships between angles and side lengths of triangles. In …

  3. Trigonometry | Definition, Formulas, Ratios, & Identities | Britannica

    Jan 19, 2026 · 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), …

  4. Trigonometry | Khan Academy

    Explore the world of trigonometry by mastering right triangles and their applications, understanding and graphing trig functions, solving problems involving non-right triangles, and unlocking the power of …

  5. What is Trigonometry? Formulas, Table, Examples - Cuemath

    Trigonometry is one of the most important branches in mathematics. The word trigonometry is formed by clubbing words 'Trigonon' and 'Metron' which means triangle and measure respectively. It is the …

  6. Trigonometry - Math Steps, Examples & Questions

    Free trigonometry math topic guide, including step-by-step examples, free practice questions, teaching tips and more!

  7. Trigonometry - Math.net

    Trigonometry 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 …

  8. Basic Trigonometric Functions | Brilliant Math & Science Wiki

    Trigonometry comes from the two roots, trigonon (or “triangle”) and metria (or “measure”). The study of trigonometry is thus the study of measurements of triangles. What can we measure in a triangle? …

  9. Trigonometry is a branch of mathematics that focuses on relationships between the sides and angles of triangles. The word trigonometry comes from the Latin derivative of Greek words for triangle …

  10. Trigonometry -- from Wolfram MathWorld

    Feb 9, 2026 · Trigonometry The study of angles and of the angular relationships of planar and three-dimensional figures is known as trigonometry. The trigonometric functions (also called the circular …