The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art. With a New Set of Accurate Mathematical Tables
Harper, 1832 - 348 σελίδες
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acres altitude angle Answer arch base bearing called centre chord circle column compasses contained contents correction decimal departure describe difference direct distance divided divisions draw drawn east edge equal error EXAMPLE extended feet figure four fourth give given glass greater ground half height Hence horizon inches laid land latitude length less logarithms manner marked measure meridian distance method middle minutes multiplied object observed opposite parallel passes perches perpendicular plane prob PROBLEM proportion quadrant quotient radius reduce remaining right angles right line root rule scale secant sect side sights sine square station subtract suppose survey taken tangent term theo third triangle triangle ABC true turn whole
Σελίδα 173 - In like manner, when it is said, that " triangles on the same base, and between the same parallels, are equal...
Σελίδα 163 - RULE. From half the sum of the three sides subtract each side severally.
Σελίδα 41 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Σελίδα 97 - 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.
Σελίδα 41 - The radius of a circle is a right line drawn from the centre to the circumference.
Σελίδα 52 - Triangles upon equal bases, and between the same parallels, are equal to one another.
Σελίδα 24 - The square of the sum of two numbers is equal to the square of the first number plus twice the product of the first and second number plus the square of the second number.