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The multiplication sign ( × ), also known as the times sign or the dimension sign, is a mathematical symbol used to denote the operation of multiplication, which results in a product. [1] While similar to a lowercase X ( x ), the form is properly a four-fold rotationally symmetric saltire. [2]
The symbol # is known variously in English-speaking regions as the number sign, hash, or pound sign. The symbol has historically been used for a wide range of purposes including the designation of an ordinal number and as a ligatured abbreviation for pounds avoirdupois – having been derived from the now-rare ℔ .
In mathematics, sine and cosine are trigonometric functions of an angle. The sine and cosine of an acute angle are defined in the context of a right triangle: for the specified angle, its sine is the ratio of the length of the side that is opposite that angle to the length of the longest side of the triangle (the hypotenuse ), and the cosine is ...
A stop sign is a traffic sign designed to notify drivers that they must come to a complete stop and make sure the intersection (or railroad crossing) is safely clear of vehicles and pedestrians before continuing past the sign. [1] In many countries, the sign is a red octagon with the word STOP, in either English or the national language of that ...
The Sign in Sidney Brustein's Window is the second and last staged play by playwright Lorraine Hansberry, author of A Raisin in the Sun. The play focuses on events that occur after Sidney hangs a political sign urging the end to bossism in the window of his Greenwich Village apartment. Chaos ensues in his marriage and personal relationships and ...
Flat (music) In music, flat means lower in pitch. It may either be used generically, meaning any lowering of pitch, or refer to a particular size: lowering pitch by a chromatic semitone. A flat is the opposite of a sharp ( ♯) which raises pitch by the same amount that a flat lowers it. ♭.
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The soft sign (Ь ь; italics: Ь ь) is a letter in the Cyrillic script that is used in various Slavic languages. [1] In Old Church Slavonic, it represented a short or reduced front vowel. However, over time, the specific vowel sound it denoted was largely eliminated and merged with other vowel sounds. In most contemporary Slavic Cyrillic ...