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  1. Trigonometry - Wikipedia

    Trigonometric ratios are the ratios between edges of a right triangle. These ratios depend only on one acute angle of the right triangle, since any two right triangles with the same acute angle …

  2. Introduction to 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 …

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

    2025年8月18日 · Trigonometric functions are used in obtaining unknown angles and distances from known or measured angles in geometric figures. Trigonometry developed from a need to …

  4. Trigonometric functions - Math.net

    Trigonometric functions are functions related to an angle. There are six trigonometric functions: sine, cosine, tangent and their reciprocals cosecant, secant, and cotangent, respectively.

  5. 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 …

  6. Trigonometric Functions - Definition, Formula, Table, Identities, …

    2025年2月24日 · What are the trigonometric functions. Learn how to find its values with its list, formula, properties, and examples.

  7. 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 …

  8. Trigonometric functions - Wikipedia

    The trigonometric functions most widely used in modern mathematics are the sine, the cosine, and the tangent functions. Their reciprocals are respectively the cosecant, the secant, and the …

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

    2025年7月23日 · The relationship between trigonometric functions is expressed via trigonometric identities, sometimes referred to as trig identities or trig formulae. They remain true for all real …

  10. Trigonometric function | Definition, Formula, & Facts | Britannica

    2025年8月22日 · Trigonometric function, in mathematics, one of six functions (sine, cosine, tangent, cotangent, secant, and cosecant) that represent ratios of sides of right triangles.