A Course of Mathematics: Containing the Principles of Plane Trigonometry, Mensuration, Navigation, and Surveying. Adapted to the Method of Instruction in the American CollegesDurrie & Peck, 1853 - 5 páginas |
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Página 49
... measures the progress of light from the stars . 72. Trigonometry is either plane or spherical . The for- mer treats ... measuring the latter , a circle is introduced . The periphery of every circle , whether great or small , is supposed ...
... measures the progress of light from the stars . 72. Trigonometry is either plane or spherical . The for- mer treats ... measuring the latter , a circle is introduced . The periphery of every circle , whether great or small , is supposed ...
Página 50
... measure of the angle ACB . It is immaterial what is the size of the circle , provided it cuts the lines which include the angle . Thus , the angle ACD ( Fig . 4. ) is measured by either of the arcs AG , ag . For ACD is to ACH , as AG to ...
... measure of the angle ACB . It is immaterial what is the size of the circle , provided it cuts the lines which include the angle . Thus , the angle ACD ( Fig . 4. ) is measured by either of the arcs AG , ag . For ACD is to ACH , as AG to ...
Página 55
... measured by this arc , will also contain 60 ° ; ( Art . 75. ) and the triangle ACS will be equilateral . For the sum of the three angles is equal to 180 ° . ( Art . 76. ) From this , taking the angle ACS , which is 60 ° , the sum of the ...
... measured by this arc , will also contain 60 ° ; ( Art . 75. ) and the triangle ACS will be equilateral . For the sum of the three angles is equal to 180 ° . ( Art . 76. ) From this , taking the angle ACS , which is 60 ° , the sum of the ...
Página 91
... measure hundredths of an inch , by inclining more and more to the right , as they cross each of the parallels . To take off , for instance , an extent of 3 inches , 4 tenths , and 6 hundredths ; Place one foot of the compasses at the ...
... measure hundredths of an inch , by inclining more and more to the right , as they cross each of the parallels . To take off , for instance , an extent of 3 inches , 4 tenths , and 6 hundredths ; Place one foot of the compasses at the ...
Página 92
... measure it . Now the proper measure of an angle is an arc of a circle . ( Art . 74. ) And the measure of an arc , where the radius is given , is its chord . For the chord is the distance , in a straight line , from one end of the arc to ...
... measure it . Now the proper measure of an angle is an arc of a circle . ( Art . 74. ) And the measure of an arc , where the radius is given , is its chord . For the chord is the distance , in a straight line , from one end of the arc to ...
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Términos y frases comunes
acute angles arithmetical complement axis base bung diameter calculation cask circle circular sector circular segment circumference cosecant cosine cotangent cube cubic decimal difference distance divided equal to radius equation feet figure find the area find the SOLIDITY frustum given angle given number given side greater hypothenuse inches inscribed JEREMIAH DAY lateral surface length less line of chords loga middle diameter natural number negative number of degrees number of sides oblique opposite angles parallelogram parallelopiped perimeter perpendicular perpendicular height plane prism PROBLEM proportion pyramid quadrant quantity quotient radius ratio regular polygon right angled triangle right cylinder rithms rods root scale secant sector segment sine sines and cosines slant-height sphere spherical square subtract tables tangent tangent of half term theorem trapezium triangle ABC trigonometry wine gallons zone
Pasajes populares
Página 81 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Página 52 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus, BA is the versed sine of the arc AG.
Página 43 - A cone is a solid figure described by the revolution of a right angled triangle about one of the sides containing the right angle, which side remains fixed.
Página 98 - For, by art. 14, the decimal part of the logarithm of any number is the same, as that of the number multiplied into 10, 100, &c.
Página 131 - In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference. By Theorem II. we have a : b : : sin. A : sin. B.
Página 38 - To the sum of the areas of the two ends add four times the area of a section parallel to and equally distant from both ends, and this last sum multiplied by | of the height will give the solidity.
Página 14 - To find then the logarithm of a vulgar fraction, subtract the logarithm of the denominator from that of the numerator. The difference will be the logarithm of the fraciion.
Página 100 - ... term. (Art. 52.) But it is more convenient in practice to begin by subtracting the first term from one of the others. If four quantities are proportional, the quotient of the first divided by the second, is equal to the quotient of the third divided by the fourth.
Página 49 - 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.
Página 41 - TO ONE OF THE SIDES. Or, MULTIPLY THE CUBE OF ONE OF THE EDGES, BY THE SOLIDITY OF A SIMILAR SOLID WHOSE EDGES ARE 1...