An elementary course of practical mathematics, Parte31851 |
Dentro del libro
Resultados 1-5 de 15
Página 257
... how many acres does it contain ? Ans . 1 ac . 1 ro . 5.7 - po . 20. What is ... number to which their united length reaches ; and one number is divided by ... degrees . sliding along each other , with their graduated edges in 257 Ꮓ OF ...
... how many acres does it contain ? Ans . 1 ac . 1 ro . 5.7 - po . 20. What is ... number to which their united length reaches ; and one number is divided by ... degrees . sliding along each other , with their graduated edges in 257 Ꮓ OF ...
Página 261
... Degrees ; a degree , to consist of 60 Minutes ; a minute of 60 Seconds ; a second of 60 Thirds , & c . With the common geometrical terms the scholar ought to be acquainted before commencing this volume . 5. If any number of straight ...
... Degrees ; a degree , to consist of 60 Minutes ; a minute of 60 Seconds ; a second of 60 Thirds , & c . With the common geometrical terms the scholar ought to be acquainted before commencing this volume . 5. If any number of straight ...
Página 262
... number of angles occupying all the angular space around that point . The whole of that angular space is supposed likewise to consist of 360 equal parts , called also Degrees , which are divided into Minutes , Seconds , & c . , like the ...
... number of angles occupying all the angular space around that point . The whole of that angular space is supposed likewise to consist of 360 equal parts , called also Degrees , which are divided into Minutes , Seconds , & c . , like the ...
Página 264
... number of degrees contained in the arc BC or in the angle BOC , the radius being at the same time named or understood . Thus , if the arc BC , or the angle BOC , is of 50 ° , and the radius OC is 10 of any equal parts , then BD is ...
... number of degrees contained in the arc BC or in the angle BOC , the radius being at the same time named or understood . Thus , if the arc BC , or the angle BOC , is of 50 ° , and the radius OC is 10 of any equal parts , then BD is ...
Página 265
... number of Degrees and Minutes . RULE . If the given number of degrees is less than 45 , look for the degrees in the top line of the table , turning over the leaves till the proper page is found . In that page , look in the second line ...
... number of Degrees and Minutes . RULE . If the given number of degrees is less than 45 , look for the degrees in the top line of the table , turning over the leaves till the proper page is found . In that page , look in the second line ...
Términos y frases comunes
angle opposite angles of elevation angular elevation arc BC arithmetical series artificial horizon chains CHAPTER VII ciphers circle column compasses compound interest Compute Cosec Cosine Cotang cube roots decimal point degrees and minutes diagram diameter Divide divisor EDINBURGH EXAMPLE EXERCISES IN CHAPTER extract the square feet figure an integer find the Angles Find the logarithms four figures fourth term geometrical progression given angle given leg given number given side horizontal angles hypothenuse inches instrument LOGARITHMIC SCALES Logarithmic Sine measured miles Multiply NOTE number of degrees object observed opposite the former opposite the latter Perp perpendicular PLANE TRIGONOMETRY Price PROBLEM II PROBLEM VII quadrant quotient radius remove the decimal right-angled triangle Secant sextant side opposite Sliding Rule spirit level square root station Subtract SUTHERLAND AND KNOX Table Tang tangent telescope theodolite third side three figures three sides Treatise versed-sine vertex vertical angle yards
Pasajes populares
Página 282 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Página 274 - RULE. — Subtract the square of the base from the square of the hypothenuse, and extract the square root of the remainder.
Página 377 - Key to above 60 3. Complete Practical Treatise on the Nature and Use of Logarithms, and on Plane Trigonometry, with Logarithmic and Trigonometrical Tables, . 5 0 4.
Página 245 - To find, then, by logarithms, the fourth term in a proportion, ADD THE LOGARITHMS OF THE SECOND AND THIRD TERMS, AND from the sum SUBTRACT THE LOGARITHM OF THE FIRST TERM.
Página 279 - From D as a center with a radius equal to a, draw an arc intersecting El in F and F'.
Página 292 - ... the angle of reflection is always equal to the angle of incidence, the image for any point can be seen only in the reflected ray prolonged.
Página 279 - Let abc (fig. 1 14) be a spherical triangle, whose sphere has its centre in o, and unity for radius. If now from c, on the plane aob, we let fall the perpendicular cd; from d on ae, bo, the perpendiculars de, df, and draw ce, cf; it would be easy to show that the triangles ceo, cfo are right angles...
Página 278 - To find a side, work the following proportion: — as the sine of the angle opposite the given side is to the sine of the angle opposite the required side, so is the given side to the required side.
Página 243 - BY LOGARITHMS. RULE. FROM the logarithm of the dividend subtract the logarithm of the divisor, and the number answering to the remainder will be the quotient required.
Página 284 - That is, as the base, is to the sum of the two sides; so is the difference of the sides, to the sum of the segments of the base.