Trigonometry - Wikipedia
Trigonometry (from Greek trigōnon, "triangle" and metron, "measure") is a branch of mathematics that studies relationships involving lengths and angles of triangles.The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies.
Trigonometry | Khan Academy
Learn trigonometry for free—right triangles, the unit circle, graphs, identities, and more. Full curriculum of exercises and videos.
Trigonometry - Math Is Fun
Trigonometry helps us find angles and distances, and is used a lot in science, engineering, video games, and more! Right-Angled Triangle. The triangle of most interest is the right-angled triangle.
trigonometry | Definition, Formulas, Ratios, & Identities ...
Trigonometry: Trigonometry, the branch of mathematics concerned with specific functions of angles.
Trigonometry: Theorems, formula, rules and Worksheets
Trignometry resources--video tutorials, interactive lessons and free calculators
Sine, Cosine, Tangent - Maths Resources
Sine, Cosine and Tangent. Three Functions, but same idea. Right Triangle. Sine, Cosine and Tangent are the main functions used in Trigonometry and are based on a Right-Angled Triangle.
Trigonometry - YouTube
Introduction to trigonometry Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/trigonometry/basic-trigonometry/bas...
What Is Trigonometry?
Trigonometry is a branch of mathematics that studies relationships between the sides and angles of triangles.
Basic Trigonometry - YouTube
An introduction to trigonometric functions: sine, cosine, and tangent. About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, worl...
Amazon.com: Trigonometry, 8th Edition (9781439049075): Ron ...
My school uses Larson books all the way from elementary algebra, up through Calculus. This Trigonometry book isn't bad, but it does lack well structured explanations in many areas.