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... is supposed to be divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are designated respectively, by the characters ° ' ". For example, ten degrees, eighteen minutes, and...
The Geometrician: Containing Essays on Plane Geometry, and Trigonometry ... - Page 60
by Benjamin Donne - 1775 - 159 pages

## 1. Mathematical Tables

Edward Vermilye Huntington, Louis Albert Fischer - Engineering - 1916 - 186 pages
...MEASURE. (360 degrees = 1 revolution.) 1 degree = 1° = Ую of a right angle. The degree is usually divided into 60 equal parts called minutes ('), and each minute into 60 equal parts called seconds ("); while the second is subdivided decimally. But for many purposes it is more convenient to divide...

## American Practical Navigator: An Epitome of Navigation and Nautical Astronomy

Nathaniel Bowditch - Nautical astronomy - 1916 - 836 pages
...meridian of the point of reference. The day is divided into 24 equal parts, called Hours; each hour is divided into 60 equal parts, called Minutes, and each minute into 60 equalparts, called Seconds. 273. APPAKENT OR SOLAB TIME. — The hour angle of the center of the sun...

## Cyclopedia of Architecture, Carpentry, and Building: A General Reference ...

Architecture - 1917
...degrees, ie, it is -^ =£ of a circumference. Li order to obtain accurate measurements each degree is divided into 60 equal parts called minutes and each minute into 60 equal parts called seconds. r:~ S7_ Angular Measurement /OS /so 39 SOLIDS A solid has three dimensions — length, breadth, and...

## Sanitary, Heating and Ventilation Engineering: A General Reference ..., Volume 4

Heating - 1918
...degrees, ie, it is vVr = | of a circumference. In order to obtain accurate measurements each degree is divided into 60 equal parts called minutes and each minute into 60 equal parts called seconds. Fig.. 67. Angular Measurement SOLIDS A solid has three dimensions — length, breadth, and thickness....

## Carpentry and Contracting: A Practical Reference Work on Carpentry, Building ...

Building - 1919
...degrees, ie, it is -sVir = i of a circumference. In order to obtain accurate measurements each degree is divided into 60 equal parts called minutes and each minute into 60 equal parts called seconds. Fig. 67. Angular Measurement SOLIDS A solid has three dimensions — length, breadth, and thickness....

## Complete Geography

Harmon Bay Niver - Geography - 1922 - 327 pages
...circle, no matter what size it may be, is divided into 360 equal parts called degrees. Each degree is divided into 60 equal parts called minutes, and each minute into 60 equal parts called seconds. The Equator and the meridian circles are called great circles, because they divide the earth into hemispheres....