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What (who) is trig$549169$ - definition
WIKIMEDIA LIST ARTICLE
Trig Proofs
TriG (syntax)
SERIALIZATION FILE FORMAT FOR RESOURCE DESCRIPTION FRAMEWORK GRAPHS
TriG is a serialization format for RDF (Resource Description Framework) graphs. It is a plain text format for serializing named graphs and RDF Datasets which offers a compact and readable alternative to the XML-based TriX syntax.
trigonometry
![Function <math>s(x)</math> (in red) is a sum of six sine functions of different amplitudes and harmonically related frequencies. Their summation is called a Fourier series. The Fourier transform, <math>S(f)</math> (in blue), which depicts [[amplitude]] vs [[frequency]], reveals the 6 frequencies (''at odd harmonics'') and their amplitudes (''1/odd number'').](https://commons.wikimedia.org/wiki/Special:FilePath/Fourier series and transform.gif?width=200 "Function <math>s(x)</math> (in red) is a sum of six sine functions of different amplitudes and harmonically related frequencies. Their summation is called a Fourier series. The Fourier transform, <math>S(f)</math> (in blue), which depicts [[amplitude]] vs [[frequency]], reveals the 6 frequencies (''at odd harmonics'') and their amplitudes (''1/odd number'').")
![[[Sextant]]s are used to measure the angle of the sun or stars with respect to the horizon. Using trigonometry and a [[marine chronometer]], the position of the ship can be determined from such measurements.](https://commons.wikimedia.org/wiki/Special:FilePath/Frieberger drum marine sextant.jpg?width=200 "[[Sextant]]s are used to measure the angle of the sun or stars with respect to the horizon. Using trigonometry and a [[marine chronometer]], the position of the ship can be determined from such measurements.")
![p=[https://archive.org/details/historyofmathema00boye/page/162 162]}}](https://commons.wikimedia.org/wiki/Special:FilePath/Hipparchos 1.jpeg?width=200 "p=[https://archive.org/details/historyofmathema00boye/page/162 162]}}")
BRANCH OF MATHEMATICS THAT STUDIES TRIANGLES AND THE RELATIONSHIPS BETWEEN THEIR SIDES AND THE ANGLES BETWEEN THESE SIDES.
Trigonometery; Trigonometric; Trig.; Adjacent Side; Tigonometry; Trignometry; Classical trigonometry; Adjacent side; Trigometry; Trigonometric ratios; Trigonometric Ratios; Pretrigonometry; Trigonomy; Trig; Triangle identities; Allied angles; Trigonometrist
Trigonometry is the branch of mathematics that is concerned with calculating the angles of triangles or the lengths of their sides.
N-UNCOUNT
Trigonometric
BRANCH OF MATHEMATICS THAT STUDIES TRIANGLES AND THE RELATIONSHIPS BETWEEN THEIR SIDES AND THE ANGLES BETWEEN THESE SIDES.
Trigonometery; Trigonometric; Trig.; Adjacent Side; Tigonometry; Trignometry; Classical trigonometry; Adjacent side; Trigometry; Trigonometric ratios; Trigonometric Ratios; Pretrigonometry; Trigonomy; Trig; Triangle identities; Allied angles; Trigonometrist
·- ·Alt. of Trigonometrical.
Wikipedia
Proofs of trigonometric identities
There are several equivalent ways for defining trigonometric functions, and the proof of the trigonometric identities between them depend on the chosen definition. The oldest and somehow the most elementary definition is based on the geometry of right triangles. The proofs given in this article use this definition, and thus apply to non-negative angles not greater than a right angle. For greater and negative angles, see Trigonometric functions.
Other definitions, and therefore other proofs are based on the Taylor series of sine and cosine, or on the differential equation to which they are solutions.
