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First Book on Plane Trigonometry, Comprising Geometrical Trigonometry George Wirgman Hemming No preview available - 2016 |
Common terms and phrases
1+tan A-sin A+ sin AC AC acute adjacent angle angle BAC angles less B'AC BAC AP base ciphers circumscribed circles common logarithmic complementary angle cos² cosec cosine cosines and tangents determined by inspec Diff distance equation feet fifth place find log find the logarithm five decimal places following example formulæ four significant digits fractions given angle Given log given logarithm given to determine graduated gral digit Hence the logarithm horizontal plane increases inscribed integral digits keep the mantissa L sin less than unity log BC=log loga m+log Mantissa of log number containing number of degrees obtained perpendicular polygon principle of proportional proposed logarithm ratio right angle right-angled triangle rithm secant Shew sides sin² sine sine and cosine supplementary angles tabular logarithms tangents and cotangents theodolite tion triangle ABC Trigono trigonometrical functions values vernier
Popular passages
Page 16 - A sin B sin (A — B) = sin A cos B — cos A sin B cos (A + B) = cos A cos B...
Page 115 - PRINCIPLES OF THE DIFFERENTIAL AND INTEGRAL CALCULUS, Familiarly illustrated and applied to a Variety of Useful Purposes. Designed for the Instruction of young Persons. By the Rev.
Page 33 - Any positive number being selected as a base, the logarithm of any other positive number is the exponent of the power to which the base must be raised to produce the given number. Thus, if a
Page 115 - THE STUDENT'S JOURNAL. Arranged, Printed, and Ruled for receiving an Account of every Day's Employment for the space of One Year. With an Index and Appendix.
Page 115 - RITCHIE'S PRINCIPLES of the DIFFERENTIAL and INTEGRAL CALCULUS, familiarly Illustrated, and applied to a variety of useful purposes. Second Edition. Revised by JA SPENCER, BA, Assistant Mathematical Master in University College School.
Page 101 - From a station, B, at the base of a mountain, its summit A is seen at an elevation of 60° ; after walking one mile towards the summit, up a plane making an angle of 30° with the horizon, to another station, C, the angle BCA is observed to be 135° : find the height of the mountain in yards.
Page 115 - I propose from this day to keep an exact Journal of my Actions and Studies, both to assist my Memory, and to accustom me to set a due value on my Time." Introduction to Mr. Gibbon's Journal. THE PRIVATE DIARY : formed on the Plan of the STUDENT'S JOURNAL, for general Use.