 The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.  Putnam's Arithmetic - Σελίδα 214των Rufus Putnam - 1849 - 264 σελίδεςΠλήρης προβολή - Σχετικά με αυτό το βιβλίο
 | George Albert Wentworth - 1886 - 392 σελίδες
...about a point in a plane is divided into 360 equal parts, called degrees. Each degree is subdivided into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds. Likewise the circumference of a circle is divided into 3GO equal arcs, each corresponding to an angle... | |
 | M. P. Caldwell - 1883 - 198 σελίδες
...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 - 704 σελίδες
...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 - 372 σελίδες
...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 - 370 σελίδες
...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 - 360 σελίδες
...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 - 990 σελίδες
...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 - 440 σελίδες
...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 - 244 σελίδες
...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 - 334 σελίδες
...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... | |
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