| Joseph Allen - 1832 - 116 páginas
...360 equal parts, called degrees, and each degree contains about 09 A miles. Each degree is divided **into 60 equal parts, called minutes, and each minute into 60 equal parts, called seconds.** Questions for Review. How many degrees are there in the circumference of the earth ? How many miles... | |
| Abel Flint - 1835 - 334 páginas
...divides the circle into two equal parts, called semicircles ; as AB or DE. Fig. 5. 14. The circumference **of every circle is supposed to be divided into 360...and each minute into 60 equal parts, called seconds** ; and these into thirds, &c. NOTE. Since all circles are divided into the same number of degrees, a... | |
| Euclid - 1835 - 513 páginas
...and BC, in A and C ; the arch AC is called the measure of the angle ABC. II. The circumference of a **circle is supposed to be divided into 360 equal parts...each minute into 60 equal parts called seconds, &c.** A degree is marked thus, ° ; a minute thus, ' ; a second thus,"; and so on: for example, 57° 17'... | |
| Abel Flint - 1835 - 334 páginas
...Tivides the circle into two equal parts, calle. .emicircles ; as AB or DE. Fig. 5. 14. The , jmference **of every circle is supposed to be divided into 360...degrees ; and each degree into 60 equal parts, called** minute*; and each minute into 60 equal parts, called seconds; and these into thirds, &c. NOTE. Since... | |
| Mary Somerville - 1835 - 493 páginas
...the ellipse. NOTE 49. p. 12. Ninety degrees. A circle is divided into 3fiO equal parts, or degrees; **each degree into 60 equal parts, called minutes ;...and each minute into 60 equal parts, called seconds.** It is usual to write these quantities thus, 15° 16' 10'', which means fifteen degrees, sixteen minutes,... | |
| John Lee Comstock - 1835
...neai the star a. Each of the 12 signs of the zodiac is divided into 30 smaller parts, called degrees; **each degree into 60 equal parts, called minutes, and each minute into** (50 parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign... | |
| John Lee Comstock - 1835 - 286 páginas
...neai the star a. Each of the 12 signs of the zodiac is divided into 30 smaller parts, called degrees; **each degree into 60 equal parts, called minutes, and each minute into** GO parts, called seconds. The division of the zodiac into signs, is of very ancient date, each sign... | |
| John Playfair - 1836 - 114 páginas
...C ; the arc AC may be called the measure of the angle ABC, II. The circumference of a circle may be **supposed to be divided into 360 equal parts called...each minute into 60 equal parts called seconds, &c.** And as many degrees, minutes, seconds, &c. as are contained in any arc, of so many degrees, minutes,... | |
| Adrien Marie Legendre - 1836 - 359 páginas
...trigonometrical calculation, the cir cumference of the circle is divided into 360 equal parts, called degrees ; **each degree into 60 equal parts, called minutes ;...and each minute into 60 equal parts, called seconds.** The semicircumference, or the measure of two right angles, contains 180 degrees ; the quarter of the... | |
| John Lee Comstock - 1836 - 295 páginas
...appears to move Each of the 12 signs of the zodiac is divided (nto 30 smaller parts, called degrees; **each degree into 60 equal parts, called minutes, and each minute into** BO parts, called seconds.) The division of the zodiac into signs, is of very ancient date, each sign... | |
| |