A Treatise of Plane Trigonometry, and the Mensuration of Heights and Distances: To which is Prefixed a Summary View of the Nature and Use of Logarithms. Adapted to the Method of Instruction in Schools and AcademiesIvison & Phinney, 1855 - 237 páginas |
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Página 48
... described that its center shall be the angular point , and its periphery shall cut the two lines which include the angle . The arc between the two lines is considered a measure of the angle , because , by Euc . 33. 6 , angles at the ...
... described that its center shall be the angular point , and its periphery shall cut the two lines which include the angle . The arc between the two lines is considered a measure of the angle , because , by Euc . 33. 6 , angles at the ...
Página 70
... described , with the given radius , and about the angle Cas a centre ; BF will be the sine , and BC the cosine of that angle . ( Art . 82 , 89. ) Therefore the C F B sine of the angle at C , taken from the tables , will be the length of ...
... described , with the given radius , and about the angle Cas a centre ; BF will be the sine , and BC the cosine of that angle . ( Art . 82 , 89. ) Therefore the C F B sine of the angle at C , taken from the tables , will be the length of ...
Página 71
... secant , of an arc described by this radius . Proportions are then stated , between these lines , and the tabular radius , sine , tangent , & c . * Thomson 18. 4 . 120. A line is said to be made radius , RIGHT ANGLED TRIANGLES . 71.
... secant , of an arc described by this radius . Proportions are then stated , between these lines , and the tabular radius , sine , tangent , & c . * Thomson 18. 4 . 120. A line is said to be made radius , RIGHT ANGLED TRIANGLES . 71.
Página 72
... described , or supposed to be described , whose semi - diameter is equal to the line , and whose centre is at one end of it . 121. In any right angled triangle , if the HYPOTHENUSE be made radius , one of the legs will be a SINE of its ...
... described , or supposed to be described , whose semi - diameter is equal to the line , and whose centre is at one end of it . 121. In any right angled triangle , if the HYPOTHENUSE be made radius , one of the legs will be a SINE of its ...
Página 101
... described , and the length of its chords deter- F B A H mined for every degree of the quadrant . These measures are put on the plane scale , on the line marked CHO . 160. The chord of 60 ° is equal to radius . ( Art . 95. ) In laying ...
... described , and the length of its chords deter- F B A H mined for every degree of the quadrant . These measures are put on the plane scale , on the line marked CHO . 160. The chord of 60 ° is equal to radius . ( Art . 95. ) In laying ...
Otras ediciones - Ver todas
A Treatise of Plane Trigonometry, and the Mensuration of Heights and ... Jeremiah Day Vista completa - 1848 |
A Treatise of Plane Trigonometry, and the Mensuration of Heights and ... Jeremiah Day Sin vista previa disponible - 2016 |
A Treatise Of Plane Trigonometry, And The Mensuration Of Heights And ... Jeremiah Day Sin vista previa disponible - 2008 |
Términos y frases comunes
ac AC arithmetical complement base bung diameter calculation cask centre circle circular segment circumference cosecant Cosine Sine Cotang cube cubic decimal dicular difference distance divided equal to half equal to radius extend feet figure find the angles frustum given angle given side gles greater hypothenuse inches inscribed lateral surface length less line of chords line of numbers loga logarithm measure miles multiplied natural number negative number of degrees number of sides oblique parallelogram parallelopiped perimeter perpen perpendicular perpendicular height plane prism PROBLEM proportion pyramid quadrant quantity quotient radius regular polygon right angled triangle right cylinder rithm rods root scale secant sector segment slant-height sphere square subtended subtracting tables Tang tangent term Theorem Thomson's Legendre trapezium triangle ABC Trig trigonometry vulgar fraction whole wine gallons zone
Pasajes populares
Página 19 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.
Página 19 - 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 fraction. Or the logarithm may be found, by first reducing the vulgar fraction to a decimal. If the numerator is less than the denominator, the index of the logarithm must be negative, because the value of the fraction is less than a unit. ( Art* 9.) Required the logarithm of f 4.
Página 129 - From half the sum of the sides, subtract each side severally; multiply together the half sum and the three remainders; and extract the square root of the product.
Página 56 - A cylinder is a solid described by the revolution of a rectangle about one of its sides, which remains fixed.
Página 92 - One of the required angles is found, by beginning with a side, and, according to Theorem I, stating the proportion, As the side opposite the given angle, To the sine of that angle ; So is the side opposite the required angle, To the sine of that angle. The third angle is found, by subtracting the sum of the other two from 180° ; and the remaining side is found, by the proportion in the preceding article.
Página 39 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Página 34 - But the difference of two squares is equal to the product of the sum and difference of their roots.
Página 27 - ... base. For the area of a circle is equal to the product of half the diameter into half the circumference ; (Art.
Página 18 - The sum of the logarithms of two numbers, is the logarithm of the product of those numbers ; and the difference of the logarithms of two numbers, is the logarithm of the quotient of one of the numbers divided by the other. (Art. 2.) In Briggs' system, the logarithm of 10 is 1.
Página 38 - Find the amount of 1 dollar for 1 year ; multiply its logarithm by the number of years ; and to the product, add the logarithm of the principal. The 'sum will be the logarithm of the amount for the given time. From the amount subtract the principal, and the remainder will be the interest.