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  1. 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.

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

    Dec 12, 2025 · 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), …

  3. 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 …

  4. Trigonometry - Math is Fun

    Trigonometry helps us find angles and distances, is used a lot in science, engineering, video games, and more! The triangle of most interest is the right-angled triangle. The right angle is shown by the …

  5. 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.

  6. Trigonometry Formulas - All Trigonometric Formulas List

    In Trigonometry, different types of problems can be solved using trigonometry formulas. Master all trigonometric formulas from basic to advanced using solved examples and practice questions.

  7. What is Trigonometry? - BYJU'S

    Trigonometry is one of the important branches in the history of mathematics that deals with the study of the relationship between the sides and angles of a right-angled triangle.

  8. Trigonometry in Math - GeeksforGeeks

    Sep 5, 2025 · Trigonometry is a branch of mathematics that explores the relationships between the ratios of the sides of a right-angled triangle and its angles. We use trigonometry in many everyday …

  9. Trigonometric Functions - Definition, Formula, Table, Identities, and ...

    Feb 24, 2025 · Trigonometric functions, also known as ‘ circular functions,’ are the ratio between any two sides of a right triangle: the opposite side, the adjacent side, and the hypotenuse with respect to a …

  10. Trigonometry - AQA - GCSE Maths Revision - BBC

    Trigonometry involves three ratios - sine, cosine and tangent which are abbreviated to sin, cos and tan. The three ratios can be found by calculating the ratio of two sides of a right-angled...