| M. P. Caldwell - 1883 - 191 páginas
...is used in estimating latitude and longimde, and also in measuring the motions of heavenly bodies. **The circumference of every circle is supposed to be divided into 360** degrees. TIME. 60 Seconds (sec.) make 1 Minute, marked m. 60 Minutes " 1 Hour, " hr. 24 Hours " 1 Day,... | |
| Nathaniel Bowditch - 1888 - 647 páginas
...small, are supposed to have their circumference divided into 360 equal parts, called degrees ; and **each degree into 60 equal parts, called minutes ;...and each minute into 60 equal parts, called seconds** ; and so on into thirds, fourths, Jtc. ; and an arc is said to be of as many degrees as it contains... | |
| Horatio Nelson Robinson - 1888
...sjiits containing 9 yd. 2 qr. each ; how many suits did he make ? Ans. 1 7. LONGITUDE AND TIME. 224. **Every circle is supposed to be divided into 360 equal parts, called degrees.** Since the sun appears to pass from east to west round the earth, or through 360°, once in every 24... | |
| Nathan Fellowes Dupuis - 1889 - 294 páginas
...practical purposes the right angle is divided into 90 equal parts called degrees ; each degree is divided **into 60 equal parts called minutes ; and each minute into 60 equal parts called seconds.** 20 seconds and six-sevenths of a second, follows : — 51° 25' 42f . This is denoted as Theorem. —... | |
| William Findlay Shunk - 1890 - 339 páginas
...includes one-quarter of the circle, and is the measure of a right angle. Each degree is further divided **into 60 equal parts called minutes, and each minute into 60 equal parts called seconds.** Degrees, minutes, and seconds are denoted by the symbols °, ', ": thus the expression 7° 22' 33"... | |
| Charles Haynes Haswell - 1890 - 956 páginas
...right line that touches a circle without cutting it. Cotangent is tangent of complement of arc. • ii **Circumference of every circle is supposed to be divided into 360 equal parts,** termed Degrees ; each degree into 60 Minutes, and each minute into 60 Seconds, and so on. Complement... | |
| Isaac Hammond Morris - 1890 - 260 páginas
...PROBLEM 24. — To construct an angle containing a given number of degrees. The circumference of a **circle is supposed to be divided into 360 equal parts, called degrees.** The radius of a circle may be set off exactly six times round the circumference ; hence, if an arc... | |
| John H. Macke - 1891 - 228 páginas
...the circumference of a circle 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.** To find the diameter when the circumference is given. RULE. Divide the circumference by 3.1416. Example.... | |
| Charles Haynes Haswell - 1892 - 323 páginas
...that touches a circle without cutting it. A Cotangent is the tangent of the complement of the arc. **The Circumference of every circle is supposed to be...360 equal parts, called Degrees ; each degree into** 00 Minutes, and each minute into 60 Seconds, and so on. The Complement of an angle is what remains... | |
| Horatio Nelson Robinson - 1892 - 416 páginas
...the size of each farm ? Ans. 106 A. 106 P. 20 sq. yd. 1 sq. ft. 72 sq. in. LONGITUDE AND TIME. 224:. **Every circle is supposed to be, divided into 360 equal parts, called degrees.** Since the sun appears to pass from east to west round the earth, or through 360°, once in every 24... | |
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