This page gathers the 21 dictionary entries belonging to the domain “Trigonometry”, as labelled by Wiktionary. Each word leads to its full entry: definitions, etymology, pronunciation, examples.
- angular distance noun The measure of the angle between the orientation of two straight lines, rays, or vectors in three-dimensional space.
- ar- prefix Used to form the names of inverse hyperbolic functions, and the symbols for these functions.
- arcsine noun Any of several single-valued or multivalued functions that are inverses of the sine function. Symbol: arcsin, sin⁻¹
- arctangent noun Any of several single-valued or multivalued functions that are inverses of the tangent function. Symbol: arctan, tan⁻¹
- artanh noun The area hyperbolic tangent function; i.e., the inverse hyperbolic tangent function (or hyperbolic arctangent)
- cosine noun In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos
- law of cosines noun A generalization of the Pythagorean theorem that relates the lengths of the sides of a triangle to the cosine of one of its angles.
- law of tangents noun A statement about the relationship between the tangents of two angles of a triangle and the lengths of the opposing sides.
- orthogon noun A multi-dimensional figure in which all sides result in a right angle, typically surpassing the restrictions of 3 dimensions.
- Pythagorean trigonometric identity noun The equality sin (x)²+ cos (x)²=1, holding for all real and complex x, equivalent to the application of the Pythagorean theorem to the unit…
- scalene adj Having sides all unequal in length.
- secant noun In a right triangle, the reciprocal of the cosine of an angle. Symbol: sec
- sine noun In a right triangle, the ratio of the length of the side opposite an angle to the length of the hypotenuse.
- sine ratio noun The ratio of the side of a right-angled triangle opposite to a specified angle to the hypotenuse; when expressed as a real number between 0…
- sine wave noun A periodically oscillating waveform as described by the sine function, possibly multiplied by some amplitude, shifted by some phase, and…
- sinus noun Synonym of sine.
- Some Old Hippie Caught Another Hippie Tripping On Acid phrase A mnemonic used to help people remember the different trigonometric functions: sine is opposite over hypotenuse; cosine is adjacent over…
- subtendent noun The side that subtends (is opposite) a specified angle;
- trigonometric function noun Any function of an angle expressible as the ratio of two of the sides of a right triangle that has that angle (e.g., sine), or that…
- trigonometric identity noun A trigonometric equation that is true for all values of the input variable for which both sides of the equation are defined.
- unit circle noun The circle of radius 1 with centre at the origin, used in defining trigonometric functions.