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In projective geometry and related contexts, an asymptote of a curve is a line which is tangent to the curve at a point at infinity. [1] [2] The word asymptote is derived from the Greek ἀσύμπτωτος (asumptōtos) which means "not falling together", from ἀ priv. + σύν "together" + πτωτ-ός "fallen". [3]
A similar definition applies to space curves and curves in n-dimensional Euclidean space. The point where the tangent line and the curve meet or intersect is called the point of tangency. The tangent line is said to be "going in the same direction" as the curve, and is thus the best straight-line approximation to the curve at that point.
A related term is tangentiality—it refers to off-the-point, oblique or irrelevant answers given to questions. [2] In some studies on creativity, knight's move thinking—while describing a similarly loose association of ideas—is not considered a mental disorder or the hallmark of one; it is sometimes used as a synonym for lateral thinking.
Tangent (clavichord), a part of the action of the clavichord that both initiates and sustains a tone, and helps determine pitch; Tangent (tangent piano), a part of the action of the tangent piano that only initiates the sound by striking the string(s) and rebounding immediately in the manner of a piano
The word horizontal is derived from the Latin horizon, which derives from the Greek ὁρῐ́ζων, meaning 'separating' or 'marking a boundary'. [2] The word vertical is derived from the late Latin verticalis, which is from the same root as vertex, meaning 'highest point' or more literally the 'turning point' such as in a whirlpool.
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The following is an alphabetical list of Greek and Latin roots, stems, and prefixes commonly used in the English language from P to Z. See also the lists from A to G and from H to O . Some of those used in medicine and medical technology are not listed here but instead in the entry for List of medical roots, suffixes and prefixes .
Signs of trigonometric functions in each quadrant. All Students Take Calculus is a mnemonic for the sign of each trigonometric functions in each quadrant of the plane. The letters ASTC signify which of the trigonometric functions are positive, starting in the top right 1st quadrant and moving counterclockwise through quadrants 2 to 4.