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  1. 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 …

  2. Trigonometry - Wikipedia

    Trigonometry is known for its many identities. These trigonometric identities [5] are commonly used for rewriting trigonometrical expressions with the aim to simplify an expression, to find a …

  3. Trig Calculator | Trigonometric Calculator

    This trig calculator finds the values of trig functions and solves right triangles using trigonometry.

  4. Trigonometry | Definition, Formulas, Ratios, & Identities ...

    There are six functions of an angle commonly used in trigonometry. Their names and abbreviations are sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec), and …

  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. HICL and TRIG abandon £5.3B merger plan after shareholder ...

    Dec 1, 2025 · HICL scraps £5.3B merger with TRIG after investor backlash, despite boards insisting the deal offered scale, liquidity and strategic benefits.

  7. Trig functions - Math Steps, Examples & Questions

    Trig functions, or trigonometric functions, are functions that relate an angle in a right triangle to the ratio of two of its sides. Sin, Cos, and Tan (sine, cosine, tangent) are trig functions.