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.. The 3rd-century astronomers first noted that the lengths of the sides of a right-angle triangle and the ...
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.The right angle is shown by the little box in the corner:
trigonometry | Definition, Formulas, Ratios, & Identities ...
Trigonometry in the modern sense began with the Greeks. Hipparchus (c. 190–120 bce) was the first to construct a table of values for a trigonometric function.He considered every triangle—planar or spherical—as being inscribed in a circle, so that each side becomes a chord (that is, a straight line that connects two points on a curve or surface, as shown by the inscribed triangle ABC in ...
Trigonometry | Khan Academy
Learn trigonometry for free—right triangles, the unit circle, graphs, identities, and more. Full curriculum of exercises and videos.
Trigonometry with right triangles | Math | Khan Academy
Learn the basics of trigonometry: What are sine, cosine, and tangent? How can we use them to solve for unknown sides and angles in right triangles?
Amazon.com: Trigonometry - Mathematics: Books
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An introduction to trigonometric functions: sine, cosine, and tangent. About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, world-class education for anyone, anywhere.
Trigonometry -- from Wolfram MathWorld
Trigonometry. 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) comprising trigonometry are the cosecant, cosine, cotangent, secant, sine, and tangent.The inverses of these functions are denoted , , , , , and .Note that the notation here means inverse function ...
Basic trigonometry | Basic trigonometry | Trigonometry | Khan Academy
Looking at the prefix, tri-, you could probably assume that trigonometry ("trig" as it's sometimes called) has something to do with triangles. You would be right! Trig is the study of the ...
Trigonometry | Define Trigonometry at Dictionary.com
Trigonometry definition, the branch of mathematics that deals with the relations between the sides and angles of plane or spherical triangles, and the calculations based on them. See more.