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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 - 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 …

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

    2025年12月12日 · 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. 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 right-angled triangle with its angles. The ratios used to study this relationship are called …

  5. Trigonometry - Math Steps, Examples & Questions - Third Space …

    Trigonometry is a branch of mathematics that focuses on triangles. Specifically, the relationship between the angles and sides of triangles. Trigonometry is derived from the Greek word “trigonon” meaning …

  6. 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.

  7. What is Trigonometry? - Basic-mathematics.com

    Trigonometry has been around for more than 3000 years. The Babylonians, the Greeks, and the Egyptians all used trigonometry to find the lengths of the sides of triangles and the measures of their …

  8. Trigonometry Formulas - List of All Trigonometric Identities and ...

    2025年7月23日 · Trigonometry formulas are equations that relate the various trigonometric ratios to each other. They are essential for solving a wide range of problems in mathematics, physics, …

  9. Trigonometry - from Wolfram MathWorld

    2025年12月22日 · 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 functions) …

  10. Trigonometry: Theorems, formula, rules and Worksheets

    What is a Radian? What are Cofunctions?