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adjacent adjusted altitude angle base bearing becomes changes circle co-sine compass corner correction corresponding cosec Cotang course denote departure difference direction dist distance divided draw east equal established Examples feet field notes formulas function give given height hence horizontal included increases intersection land latitude length less logarithm marked measured meridian method middle miles minus needle negative opposite original parallel passes perpendicular plane positive principles Problem quadrant radius range reading respectively sailing screw section corner ship side sights sine solution square stake station surface survey taken tangent telescope third township trees triangle true turn values variation vernier vertical volume
Página 110 - I. The sine of the middle part is equal to the product of the tangents of the adjacent parts.
Página 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.
Página 22 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Página 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.
Página 144 - Any angle is greater than the difference between 180° and the sum of the other two angles.
Página 124 - That is, the sines of the sides of a spherical triangle are proportional to the sines of the opposite angles.
Página 65 - 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.
Página 145 - 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...