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Books Books 1 - 10 of 14 on In this method the right angle is divided into 90 equal parts, each of which is called....  
" In this method the right angle is divided into 90 equal parts, each of which is called a degree. Each degree is subdivided into 60 equal parts, each of which is called a minute. "
Trigonometry and Double Algebra - Page 3
by Augustus De Morgan - 1849 - 167 pages
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A TREATISE ON A BOX OF INSTRUMENTS AND THE SLIDE-RULE

THOMAS KENTISH - 1852
...TRIGONOMETRY. THE circumference of a circle is supposed to be divided into 360 equal parts, called degrees. Each degree is divided into 60 minutes; each minute into 60 seconds; and so on. Degrees are marked with a small at the top of the figure, minutes with ', seconds with...
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The Elements of Plane Trigonometry

James Hann - Plane trigonometry - 1854 - 119 pages
...estimating angular measures, we suppose the right angle to be the primary one, and to be divided into 90 equal parts, each of which is called a degree; each degree is supposed to be divided into 60 equal parts, each of which is called a minute ; each minute is supposed...
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A Treatise on a Vox of Instruments and the Slide-rule: For the Use of ...

Thomas Kentish - 1854
...TRIGONOMETRY. THE circumference of a circle is supposed to be divided into 360 equal parts, called degrees. Each degree is divided into 60 minutes ; each minute into 60 seconds ; and so on. Degrees are marked with a small at the top of the figure, minutes with ', seconds with...
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An elementary treatise on plane trigonometry

Richard Dunkley Beasley - Plane trigonometry - 1858 - 106 pages
...convenient to divide it. In England we divide the right angle into 90 equal parts called degrees ; each degree is divided into 60 minutes ; each minute into 60 seconds. Any angle is then measured by the number of degrees, minutes, seconds, and decimal parts of a second...
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The weather guide-book

Alfred John Pearce (astrologer.) - 1864
...This divides each of them into two semicircles. All great circles are divided into 360 equal portions, each of which is called a degree ( ). Each degree is divided into 60 equal portions called minutes ( ' ). Each minute is divided into 60 equal portions called seconds (*...
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A treatise on elementary trigonometry. [With] Key, by H. Carr

John Bascombe Lock, Henry Carr (of Lagos.) - 1882
...or decimal, method. I. The Sexagesimal Method. 46. In this method the right angle is divided into 90 equal parts, each of which is called a degree ; each degree is subdivided into 60 equal parts, each of which is called a minute ; and each minute is again subdivided...
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Moffatt's pupil teachers' course (ed. by T. Page). Candidates, 2nd ..., Volume 4

Moffatt and Paige - 1883
...Arc. For the purposes of measurement, the circumference of a circle is supposed to be divided into 360 parts, each of which is called a degree. Each degree is divided into sixty minutes, and each minute into sixty seconds. These are generally expressed by signs, thus :...
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A treatise on elementary trigonometry

John Bascombe Lock - Trigonometry - 1885 - 274 pages
...angles. 2. & 4 B. 6. I. The Sexagesimal Method. 46. In this method the right angle is divided into 90 equal parts, each of which is called a degree ; each degree is subdivided into 60 equal parts, each of which is called a minute ; and each minute is again subdivided...
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Elements of Plane and Spherical Trigonometry: With Numerous Examples

Edward Albert Bowser - Trigonometry - 1892 - 172 pages
...Sexagesimal Method. This is the method in general use. In this method the right angle is divided into 90 equal parts, each of which is called a degree. Each degree is subdivided into 60 equal parts, each of which is called a minute. Each minute is subdivided into 60...
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A Treatise on Plane and Spherical Trigonometry: And Its Applications to ...

Edward Albert Bowser - Trigonometry - 1892 - 368 pages
...Sexagesimal Method. This is the method in general use. In this method the right angle is divided into 90 equal parts, each of which is called a degree. Each degree is subdivided into 60 equal parts, each of which is called a minute. Each minute is subdivided into 60...
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