A Treatise on Trigonometry, and on Trigonometrical Tables and Logarithms: Together with a Selection of Problems and Their SolutionsJ. & J.J. Deighton, and T. Stevenson, 1841 - 151 páginas |
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Página 2
... expressed by decimal parts of a grade , are respectively '01 and 0001 , an angle expressed in grades , minutes , and seconds , will be represented by the same figures when ex- pressed in grades and decimal parts of a grade ; thus 148.9 ...
... expressed by decimal parts of a grade , are respectively '01 and 0001 , an angle expressed in grades , minutes , and seconds , will be represented by the same figures when ex- pressed in grades and decimal parts of a grade ; thus 148.9 ...
Página 3
... ( expressed decimally ) by one - tenth of itself , and the result is the measure in degrees and decimal parts of a degree , which may then be reduced to minutes and seconds . Thus 29 ° . 5 ′ . 35 ′′ = ( 29′0925 ) degrees = ( 29- = 29.0925 ...
... ( expressed decimally ) by one - tenth of itself , and the result is the measure in degrees and decimal parts of a degree , which may then be reduced to minutes and seconds . Thus 29 ° . 5 ′ . 35 ′′ = ( 29′0925 ) degrees = ( 29- = 29.0925 ...
Página 4
... expressed by its circular measure is sometimes said to be expressed in arc . 8 . The constant ratio of the circumference of a circle to its diameter , as already stated , is usually denoted by the sym- bol ; hence the ratio of the semi ...
... expressed by its circular measure is sometimes said to be expressed in arc . 8 . The constant ratio of the circumference of a circle to its diameter , as already stated , is usually denoted by the sym- bol ; hence the ratio of the semi ...
Página 8
... expressed . Again , suppose the values of any of the Trigonometrical Ratios given , sin A = a , cos A = a , tan A = a , for instance ; taking any line CP ( fig . 4. ) describe upon it as diameter a semi - circle , and from centre P with ...
... expressed . Again , suppose the values of any of the Trigonometrical Ratios given , sin A = a , cos A = a , tan A = a , for instance ; taking any line CP ( fig . 4. ) describe upon it as diameter a semi - circle , and from centre P with ...
Página 20
... expressed by a single formula , cos 0 = ( − 1 ) " cos ( nπ ± 0 ) . And since tan = − tan ( π − 0 ) = − tan ... expressed by a single formula , tan ✪ = tan ( ~ π + 0 ) . In all these expressions n is zero or any positive or negative ...
... expressed by a single formula , cos 0 = ( − 1 ) " cos ( nπ ± 0 ) . And since tan = − tan ( π − 0 ) = − tan ... expressed by a single formula , tan ✪ = tan ( ~ π + 0 ) . In all these expressions n is zero or any positive or negative ...
Outras edições - Ver tudo
A treatise on trigonometry and on trigonometric tables and logarithms John Hymers Visualização integral - 1812 |
Treatise on Trigonometry and Trigonometrical Tables and Logarithms; Together ... John Hymers Pré-visualização indisponível - 2012 |
Palavras e frases frequentes
ABC fig acute angle BAC arcs bisected calculation circular measure circumscribed circle consequently cos² cos³ cosec cotangent decimal point denoted determined diff difference digits distance equal equation expressed find the angle formula given angle Hence horizontal hypothenuse included angle inscribed integer intersect less than 90 log-cos log-cosine log-sin log-tan loga logarithms magnitude multiple negative opposite angles perpendicular pole polygon positive produced quadrant quantities radius regular polygon right angle right-angled triangle sec² shew side opposite Similarly sin a sin sin² sin³ sines and cosines solid angle solution sphere spherical triangle Spherical Trigonometry subsidiary angle subtends subtracting suppose tables tan² tan³ tangent telescope three sides triangle ABC Trigono Trigonometrical Ratios values Vernier zero
Passagens conhecidas
Página 3 - ... cos a = cos b cos с + sin b sin с cos A ; (2) cos b = cos a cos с + sin a sin с cos в ; ^ A. (3) cos с = cos a cos b + sin a sin b cos C.
Página 95 - The logarithm of a product is equal to the sum of the logarithms of its factors.
Página 127 - suffice to afford such an approximation to it as shall be of use in the ' present stage of the reader's knowledge, and help him to many just ' conceptions, on which account we shall exemplify its application in ' numbers. Now, it appears by observation, that two points, each ten...
Página 50 - In any triangle the square of any side is equal to the sum of the squares of the other two sides minus twice the product of these two sides and the cosine of their included angle.
Página 49 - ... these elements must be given, one of which must be a side, in order to solve a plane triangle. The solution of plane triangles depends upon the following FUNDAMENTAL PROPOSITIONS. 109. In a right-angled triangle, the side opposite to an acute angle is equal to the product of the hypothenuse into the sine of the angle ; and the side adjacent to an acute angle is equal to the product of the hypothenuse into the cosine of the angle. Let...
Página 25 - В; by means of which we can express the sine and cosine of the sum or difference of two angles in terms of the sines and cosines of the angles themselves.
Página 17 - OP — sin A cos B + cos A sin B. OM_OQ-QM_OQ NR '" OP~ OP ~ OP OP _ OQ_ ON_NR NP "ON'OP~WP'"OP =^cos A cos .B- sin .4 sin B. 77. To express the sine and cosine of the difference of two angles in terms of the sines and cosines of the angles themselves.