Trigonometry, Plane and Spherical: With the Construction and Application of LogarithmsJ. Nourse, 1748 - 77 sider |
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Resultat 1-5 av 13
Side 9
... and BC :: their Dif .: Dift . DG of the Perp . from the Middle of the Bafe ; whence , AD being also known , the Angle A will be found by Cafe 2. of Right - angles . Note , The 2d and 3d Cafes are ambiguous , Plane Trigonometry . 9.
... and BC :: their Dif .: Dift . DG of the Perp . from the Middle of the Bafe ; whence , AD being also known , the Angle A will be found by Cafe 2. of Right - angles . Note , The 2d and 3d Cafes are ambiguous , Plane Trigonometry . 9.
Side 12
... also bifects it ( by 1. 3. ) and therefore Bm ( or Dm ) will be the Sine of BC ( or DC ) , and Om its Co - fine : Moreover mn , being an arithmetical Mean between the Sines B E , DG of the two Extremes ( because Bm Dm ) is there- fore ...
... also bifects it ( by 1. 3. ) and therefore Bm ( or Dm ) will be the Sine of BC ( or DC ) , and Om its Co - fine : Moreover mn , being an arithmetical Mean between the Sines B E , DG of the two Extremes ( because Bm Dm ) is there- fore ...
Side 14
... also be obtained to a very great Degree of Exactness . PROP . IV . To fhew the Manner of constructing the Trigonome- trical Canon . First , find the Sine of an Arch of one Minute , by the preceding Prop . and then its Co - fine , by ...
... also be obtained to a very great Degree of Exactness . PROP . IV . To fhew the Manner of constructing the Trigonome- trical Canon . First , find the Sine of an Arch of one Minute , by the preceding Prop . and then its Co - fine , by ...
Side 15
... also very eafily demonftrated ; yet , as the first Sine , from whence the reft are all derived , must be carried on to a great Number of Places , to render the nu- merous Deductions from it but tolerably exact ( be- cause in every ...
... also very eafily demonftrated ; yet , as the first Sine , from whence the reft are all derived , must be carried on to a great Number of Places , to render the nu- merous Deductions from it but tolerably exact ( be- cause in every ...
Side 22
... also appears ( from Def . 2. ) that all Great- Circles , paffing thro ' the Pole of a given Circle , cut that Circle at Right - angles ; because they pass through , or coincide with the Axis , which is perpendicular to it . B E D 3 . It ...
... also appears ( from Def . 2. ) that all Great- Circles , paffing thro ' the Pole of a given Circle , cut that Circle at Right - angles ; because they pass through , or coincide with the Axis , which is perpendicular to it . B E D 3 . It ...
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Trigonometry, Plane and Spherical;: With the Construction and Application of ... Thomas Simpson Uten tilgangsbegrensning - 1765 |
Trigonometry, Plane and Spherical: With the Construction and Application of ... Thomas Simpson Uten tilgangsbegrensning - 1765 |
Trigonometry, Plane and Spherical: With the Construction and Application of ... Thomas Simpson Uten tilgangsbegrensning - 1765 |
Vanlige uttrykk og setninger
AB by Theor ABC-ACB AC by Theor AC-BC adjacent Angle alfo known alſo Arch Baſe becauſe bifecting Cafe Chord Circle Co-f Co-fine AC Co-tangent of half common Logarithm confequently Corol COROLLARY demonftrated Diameter equal to Half Excefs fame fhall fince find the Sine firft firſt fubtracted fuppofed garithms given gles Great-Circles half the Bafe half the Difference Half the Sum half the vertical hyperbolic Logarithm Hypothenufe interfect itſelf laft laſt Leg BC likewife Moreover muſt oppofite Angle pendicular perpendicular plane Triangle ABC Progreffion propofed Radius Rectangle refpectively right-angled Spherical Triangle Right-line Secant ſhall Sides AC Sine 59 Sine BCD Sine of half Spherical Triangle ABC Tang Tangent of Half Terms THEOREM thofe Trigonometry Verfed Sine vertical Angle whence whofe
Populære avsnitt
Side 1 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees; and each degree into 60 minutes, each minute into 60 seconds, and so on.
Side 3 - Canon, is a table showing the length of the sine, tangent, and secant, to every degree and minute of the quadrant, with respect to the radius, which is expressed by unity or 1, with any number of ciphers.
Side 6 - In every plane triangle, it will be, as the sum of any two sides is to their difference...
Side 41 - The sum of the logarithms of any two numbers is equal to the logarithm of their product. Therefore, the addition of logarithms corresponds to the multiplication of their numbers.
Side 13 - If the sine of the mean of three equidifferent arcs' dius being unity) be multiplied into twice the cosine of the common difference, and the sine of either extreme be deducted from the product, the remainder will be the sine of the other extreme. (B.) The sine of any arc above 60°, is equal to the sine of another arc as much below 60°, together with the sine of its excess above 60°. Remark. From this latter proposition, the sines below 60° being known, those of arcs above 60° are determinable...
Side 31 - ... is the tangent of half the vertical angle to the tangent of the angle which the perpendicular CD makes with the line CF, bisecting the vertical angle.
Side 73 - BD, is to their Difference ; fo is the Tangent of half the Sum of the Angles BDC and BCD, to the Tangent of half their Difference.
Side 28 - As the sum of the sines of two unequal arches is to their difference, so is the tangent of half the sum of those arches to the tangent of half their difference : and as the sum...
Side 68 - In any right lined triangle, having two unequal sides ; as the less of those sides is to the greater, so is radius to the tangent of an angle ; and as radius is to the tangent of the excess of...