A system of popular trigonometry1835 |
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Página xi
... called a Section of that solid , ibid . DEF . V. A sphere is a solid figure bounded by one surface , such , that all ... called the centre of the sphere , ibid . DEF . VII . A right line drawn from the centre of a sphere , and terminated ...
... called a Section of that solid , ibid . DEF . V. A sphere is a solid figure bounded by one surface , such , that all ... called the centre of the sphere , ibid . DEF . VII . A right line drawn from the centre of a sphere , and terminated ...
Página 1
... called logarithms of the multiplying ratio in the geometric series ; thus 0 is the logarithm of 7o , 1 the log . of r1 , 2 the log . of r2 , & c . It is also apparent that the same arithmetic series will correspond to the geometric ...
... called logarithms of the multiplying ratio in the geometric series ; thus 0 is the logarithm of 7o , 1 the log . of r1 , 2 the log . of r2 , & c . It is also apparent that the same arithmetic series will correspond to the geometric ...
Página 6
... called the Neperian base , and the system formed upon it the Neperian system of logarithms . From its connexion with a geometrical figure called the Hyperbola , this latter system is also called the Hyperbolic . That is , n n ' being ...
... called the Neperian base , and the system formed upon it the Neperian system of logarithms . From its connexion with a geometrical figure called the Hyperbola , this latter system is also called the Hyperbolic . That is , n n ' being ...
Página 11
... called its charac- teristic . Because it characterizes all the logarithms between two suc- cessive powers of the base . Obs . 3. By ART . 62 the logarithms of 1 1 1 1 1 1 & c . 10 ' 100 ' 1000 ' 10000 ' 100000 1000000 ' or , 101 , 102 ...
... called its charac- teristic . Because it characterizes all the logarithms between two suc- cessive powers of the base . Obs . 3. By ART . 62 the logarithms of 1 1 1 1 1 1 & c . 10 ' 100 ' 1000 ' 10000 ' 100000 1000000 ' or , 101 , 102 ...
Página 20
... called a rectan- gular parallelopiped . Hence , taking MN as linear unit , the MN P A D E I K H cube MNOPABCD may be considered as the solid unit ; and every other rectangular parallelopiped , as that in the figure , may be considered ...
... called a rectan- gular parallelopiped . Hence , taking MN as linear unit , the MN P A D E I K H cube MNOPABCD may be considered as the solid unit ; and every other rectangular parallelopiped , as that in the figure , may be considered ...
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Palavras e frases frequentes
ABCD AC AC algebraical quantities angle ACD angle bac angle is equal angular CD² centre compute Consequently corresponding cos² cosec cosine of ACD cotan determine the magnitude dicular DIONYSIUS LARDNER divided EFGH equal to half equal to one-third equation figure formula GEOM geometric series geometrical given angle goniometrical circle goniometrical lines half a right Hence inasmuch inscribed square length Let ACD likewise linear unit logarithms means opposite parallelopiped perpen perpendicular plane ABO prec radius ratio rectangle respectively right angle right-angled triangle sec² secant sides and angles sin² sine of ACD sphere submultiple subtractive supplementary angles suppose tan² tangent third side three sides Treatise triangle ABC TRIGONOMETRY
Passagens conhecidas
Página 110 - PRINCIPLES OF GEOMETRY, familiarly Illustrated, and applied to a variety of useful purposes. Designed for the Instruction of Young Persons.
Página 111 - I vol. 8vo. THE STEAM ENGINE. Explained and illustrated in a familiar style, with its application to the Arts and Manufactures, more especially in transport by Land and Water ; with some account of the Rail Roads now in progress in various parts of the World. By the Rev. DIONYSIUS LARDNER, LL.
Página vi - The logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers.
Página iii - A straight line is said to be perpendicular to a plane when it is perpendicular to every straight line which passes through its foot in that plane, and the plane is said to be perpendicular to the line.
Página 5 - Now, we know that the three angles of any triangle, taken together, are equal to two right angles...
Página 110 - Dr. Ritchie's little elementary work is excellently well adapted to its object. It is brief, plain, and full of all that is necessary : curious and useful in its application ; and beyond any other of the kind now existent in its familiar and distinct explanation of some of the instruments required in the practical application of the principles laid down and demonstrated.
Página 53 - We have, then, that the sine of an angle is equal to the cosine of its complement, and conversely.
Página iii - THEOREM. Every section of a sphere, made by a plane, is a circle.
Página 37 - The sum of the squares of the sine and cosine of an angle is...