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  1. Sine, Cosine and Tangent - Math is Fun

    Sine, Cosine and Tangent are the main functions used in Trigonometry and are based on a Right-Angled Triangle. Before getting stuck into the functions, it helps to give a name to each side of …

  2. Tangent - Math.net

    The graph of tangent is periodic, meaning that it repeats itself indefinitely. Unlike sine and cosine however, tangent has asymptotes separating each of its periods.

  3. Tangent | Definition, Formulas, & Facts | Britannica

    Jan 2, 2026 · The tangent is one of the six fundamental trigonometric functions in mathematics. In a right triangle, it is the ratio of the length of the side opposite a given angle to the length of the …

  4. Tangent - Wikipedia

    In geometry, the tangent line (or simply tangent) to a plane curve at a given point is, intuitively, the straight line that "just touches" the curve at that point.

  5. TANGENT Definition & Meaning - Merriam-Webster

    The meaning of TANGENT is an abrupt change of course : digression. How to use tangent in a sentence.

  6. TANGENT | definition in the Cambridge English Dictionary

    We were talking about exercise and got off on a tangent. A tangent is also a line that touches a curve or solid at a particular point. This is a novel with many tangents, little streams flowing off …

  7. Tangent: Introduction to the Tangent Function - Wolfram

    As the ratio of the sine and cosine functions that are particular cases of the generalized hypergeometric, Bessel, Struve, and Mathieu functions, the tangent function can also be …

  8. Tangent - Math Open Reference

    One of the trigonometry functions. In a right triangle, the tangent of an angle is the opposite side over the adjacent side. For more on this see Trigonometry tangent function.

  9. Tangent - definition of tangent by The Free Dictionary

    off on or at a tangent, digressing suddenly from one course of action or thought and turning to another.

  10. Tangent - Definition, Examples, Quiz, FAQ, Trivia

    A tangent touches a curve at exactly one point, while a secant crosses through a curve at two points. Think of a tangent as a gentle touch and a secant as a straight cut through the curve.