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Al-Battani Born: about 858, Harran near Urfa, Mesopotamia (now Turkey) Died: 929 CE Qasr al-JISS (near Samarra), Damascus ... -
Special angle is the angle to the value that can be determined Trig comparison value without using a calculator. The following table specia... -
Sometimes we think how to calculate quickly without using a calculator or other bentu tool. This discussion is about how calculate the mult... -
At this time, the figure is something that is very important for human life. For example, a calendar date, the nominal value of the mone...
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Original name of al-Khwarizmi was Muhammad Ibn Musa al-khawarizmi. In addition, he identified as Abu Abdullah Muhammad bin Ahmad bin Y... -
Definition of Pascal's Triangle is a pattern of numbers that are arranged to form a triangular pattern. The pattern of the numbers disc... -
There are three methods that are often used in solving quadratic equations, namely factoring, complete perfect square, and use the formu...
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René Descartes (IPA: ʀəne dekaʀt; born in La Haye, France, March 31, 1596 - died in Stockholm, Sweden, February 11, 1650 at the age of... -
Magic triangle is an arrangement of specific numbers within a circle that form a triangle as shown below. Our challenge here is... -
Trapezoid is a rectangle that has a proper pair of parallel sides . Trapezoid comprehensive formula we already know when the el...