Elements of Trigonometry, Plane and SphericalKelly, Piet & Company, 1871 - 288 pàgines |
Altres edicions - Mostra-ho tot
Elements of Trigonometry: Plane and Spherical Lefébure de Fourcy (M., Louis Etienne) Visualització completa - 1868 |
Elements of Trigonometry, Plane and Spherical Lefébure de Fourcy (M., Louis Etienne) Visualització completa - 1868 |
Frases i termes més freqüents
9 I I algebraic signs arc A M auxiliary angle calculations circumference Co-tangent column complement cos a sin cos² cosec decimal deduce determine Dist distance ecliptic equal equation expressed figure find the Logarithm find the sine formula fraction given number gives hence hypothenuse known latitude less LO LO LO log tang loga logarithmic sine minutes mulæ multiplying natural number number of degrees obtain opposite perpendicular plane triangle positive proportional quadrant radius ratio readily relation right ascension right-angled triangle secant similar triangles sin a sin sin a+b sin² sine and cosine solution spherical triangle substitute subtracted tang a tang tang a+b tanga tangent Theorem three sides tions triangle ABC trigonometrical lines unity values whole number yards ΙΟ
Passatges populars
Pàgina 71 - in any triangle, the sum of two sides is to their difference as the tangent of half the sum of the angles opposite to those sides is to the tangent of half their difference.
Pàgina 128 - A ladder, 40 feet long, can be so planted, that it shall reach a window 33 feet from the ground, on one side of the street; and by turning it over, without moving the foot, it will do the
Pàgina v - 9 is a proper fraction. The logarithm of every number between 10 and 100 is some number between 1 and 2, i. e., is 1 plus a fraction. The logarithm of every number between 100 and 1000 is some number between 2 and 3, ie
Pàgina v - and Division by substituting in their stead Addition and Subtrac tion. All numbers are regarded as powers of some one number, which is called the base of the system ; and the exponent of that power of the base which is equal to a given number, is called the logarithm of
Pàgina 4 - the logarithm of the m th root of a number is equal to the logarithm of the number divided by the index of the root LOGARITHMS.
Pàgina 130 - A point of land was observed by a ship at sea, to bear east-by-south; and after sailing north-east 12 miles, it was found to bear southeast-by-east. It is required to determine the place of that headland and the ship's distance from it at the last observation. Ans. 26.0728 miles.
Pàgina vi - one less than the number of integral figures in the given number. Thus the logarithm of 297 is 2 plus a fraction ; that is, the characteristic of the logarithm of 297 is 2, which is one less than the number