# Surveying and Navigation, with a Preliminary Treatise on Trigonometry and Mensuration

Van Antwerp, Braggs & Company, 1864 - 490 pàgines

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### Passatges populars

Pàgina 110 - I. The sine of the middle part is equal to the product of the tangents of the adjacent parts.
Pàgina 126 - A cos 6 = cos a cos c + sin a sin c cos B cos c = cos a cos 6 + sin a sin 6 cos C Law of Cosines for Angles cos A = — cos B...
Pàgina 34 - If two triangles have two angles and the included side of the one, equal to two angles and the included side of the other, each to each, the two triangles will be equal.
Pàgina 258 - All the corners marked in the surveys, returned by the surveyor general, or by the surveyor of the lands south of the state of Tennessee, respectively, shall be established as the proper corners of sections, or subdivisions of sections, which they were intended to designate ; and the corners of half and quarter sections, not marked on said surveys, shall be placed as nearly as possible equidistant from those two corners which stand on the same line.
Pàgina 19 - To Divide One Number by Another, Subtract the logarithm of the divisor from the logarithm of the dividend, and obtain the antilogarithm of the difference.
Pàgina 124 - That is, the sines of the sides of a spherical triangle are proportional to the sines of the opposite angles.
Pàgina 144 - Any angle is greater than the difference between 180° and the sum of the other two angles.
Pàgina 10 - The integral part of a logarithm is called the characteristic and the decimal part is called the mantissa.
Pàgina 22 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Pàgina 207 - Then carefully turn the arm half way over, until it rests upon the adjuster by the opposite faces of the rectangular blocks, and again observe the position of the sun's image. If it remains between the lines as before, the...