A Treatise of Plane Trigonometry: To which is Prefixed a Summary View of the Nature and Use of Logarithms : Being the Second Part of a Course of Mathematics, Adapted to the Method of Instruction in the American Colleges |
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Page 10
... column ; and the fourth figure is placed at the head of the other columns . Any number , therefore , between 100 and 1000 , may be found on the left hand ; and directly opposite , in the next column , is the decimal part of its ...
... column ; and the fourth figure is placed at the head of the other columns . Any number , therefore , between 100 and 1000 , may be found on the left hand ; and directly opposite , in the next column , is the decimal part of its ...
Page 11
... columns . The logarithm will be found , opposite the three first figures , and in the column which , at the head , is marked with the fourth figure . * The log . of 6234 is 3.79477 , The log . of 783400 is 5.89398 , of 6281000 6.79803 ...
... columns . The logarithm will be found , opposite the three first figures , and in the column which , at the head , is marked with the fourth figure . * The log . of 6234 is 3.79477 , The log . of 783400 is 5.89398 , of 6281000 6.79803 ...
Page 60
... column is made to answer for the sines of a number of angles above 45 ° , and for the cosines of an equal number below 45 ° . Thus 9.23967 is the log . sine of 10 ° , and the cosine of 80 ° , the sine of 20 ° , and the cosine of 70 ...
... column is made to answer for the sines of a number of angles above 45 ° , and for the cosines of an equal number below 45 ° . Thus 9.23967 is the log . sine of 10 ° , and the cosine of 80 ° , the sine of 20 ° , and the cosine of 70 ...
Page 62
... column of the same name , for the sine , tan- gent , & c . which is nearest to the given one ; and if the title be at the head of the column , take the degrees at the top of the table , and the minutes on the left ; but if the title be ...
... column of the same name , for the sine , tan- gent , & c . which is nearest to the given one ; and if the title be at the head of the column , take the degrees at the top of the table , and the minutes on the left ; but if the title be ...
Page 147
... column , at the top of the page ; and for the degrees and minutes , on the left . But if the angle is between 45 ° and 90 ° , look for the title of the column , at the bottom ; and for the degrees and minutes , on the right . D. M. Sine ...
... column , at the top of the page ; and for the degrees and minutes , on the left . But if the angle is between 45 ° and 90 ° , look for the title of the column , at the bottom ; and for the degrees and minutes , on the right . D. M. Sine ...
Other editions - View all
A Treatise of Plane Trigonometry: To Which Is Prefixed, a Summary View of ... Jeremiah Day No preview available - 2017 |
A Treatise of Plane Trigonometry: To Which Is Prefixed, a Summary View of ... Jeremiah Day No preview available - 2018 |
A Treatise of Plane Trigonometry: To Which Is Prefixed a Summary View of the ... Jeremiah Day No preview available - 2018 |
Common terms and phrases
ABC Fig ABCD altitude axis base breadth bung diameter calculation cask circle circular sector circular segment circumference column cosecant cosine cotangent course cube cubic decimal departure Diff difference of latitude difference of longitude distance divided earth equal to half equator figure find the area find the SOLIDITY frustum given sides gles greater hypothenuse inches inscribed lateral surface length less logarithm longitude measured Mercator's meridian meridional difference middle diameter miles multiply the sum number of degrees number of sides oblique parallelogram parallelopiped perpendicular perpendicular height plane sailing prism PROBLEM proportion pyramid quadrant quantity quotient radius ratio regular polygon right angled triangle right cylinder rods rule secant sector segment ship sine sines and cosines slant-height sphere spherical subtract tables tangent term theorem trapezium triangle ABC Trig trigonometry wine gallons zone
Popular passages
Page 81 - C' (89) (90) (91) (92) (93) 112. In any plane triangle, the sum of any two sides is to their difference as the tangent of half the sum of the opposite angles is to the tangent of half their difference.
Page 43 - A cone is a solid figure described by the revolution of a right angled triangle about one of the sides containing the right angle, which side remains fixed.
Page 50 - The surface of a sphere is equal to the product of its diameter by the circumference of a great circle.
Page 55 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Page 69 - It will be sufficient to lay the edge of a rule on C, so as to be parallel to a line supposed to pass through B and D, and to mark the point of intersection G. 126. If after a field has been surveyed, and the area computed, the chain is found to be too long or too short ; the true contents may be found, upon the principle that similar figures are to each other as the squares of their homologous sides.
Page 118 - The sum of any two sides of a triangle is to their difference, as the tangent of half the sum of the angles opposite to those sides, to the tangent of half their difference.
Page 89 - Divide the height of the segment by the diameter of the circle ; look for the quotient in the column of heights in the table ; take out the corresponding number in the column of areas ; and multiply it by the square of the diameter.