Trigonometry  Wikipedia
Trigonometry (from Greek trigōnon, "triangle" and metron, "measure") is a branch of mathematics that studies relationships between side lengths and angles of triangles.The field emerged in the Hellenistic world during the 3rd century BC from applications of geometry to astronomical studies. In particular, 3rdcentury astronomers first noted [citation needed] that the ratio of the lengths of ...
Trigonometry  Maths Resources
Trigonometry helps us find angles and distances, and is used a lot in science, engineering, video games, and more! RightAngled Triangle. The triangle of most interest is the rightangled 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: Theorems, formula, rules and Worksheets
more trig gifs . Graph of Sine (how graph relates to unit circle, symmetry of graph of sine) ; Graph of Cosine; Graph of Tangent: the graph and properties of y = tan(x) including asymptotes and symmetry of the graph . Amplitude of Sin (θ) and Cos (θ): how the equation relates to the graph of these equations
Trigonometry  Khan Academy
Learn trigonometry for free—right triangles, the unit circle, graphs, identities, and more. Full curriculum of exercises and videos.
Mathway  Trigonometry Problem Solver
Free math problem solver answers your trigonometry homework questions with stepbystep explanations.
Introduction to Trigonometry  SkillsYouNeed
Trigonometry, as the name might suggest, is all about triangles. More specifically, trigonometry is about rightangled triangles, where one of the internal angles is 90°. Trigonometry is a system that helps us to work out missing sides or angles in a triangle. There is more about triangles on our ...
Basic Trigonometry
An introduction to trigonometric functions: sine, cosine, and tangent. About Khan Academy: Khan Academy is a nonprofit with a mission to provide a free, worldclass education for anyone, anywhere.
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?
Trigonometry  AQA  Revision 1  GCSE Maths  BBC Bitesize
Trigonometric ratios. Trigonometry involves calculating angles and sides in triangles.. Labelling the sides. The three sides of a rightangled triangle have specific names. The hypotenuse is the ...
