## The Theory and Practice of Surveying: Containing All the Instructions Requisite for the Skilful Practice of this Art |

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Mensuration of Natural Sines 71

Mensuration of Natural Sines 71

**heights**179 Points of the Compass 82 Of Distances 194 Traverse Table 3. Mensuration of Areas 200 General Method 232 Mean Refraction Pennsylvania Method 246 Sun's Parallax 4. Page 16

The index , or exponent , is the number denot : ing the

The index , or exponent , is the number denot : ing the

**height**, or degree of the power , being always greater by one , than the number of multiplications employed in producing the power , It is usually written above the root , as in ... Page 43

The perpendicular

The perpendicular

**height**of a triangle is aline drawn from the vertex to the base perpendicularly : thus if the triangle ABC , be proposed , and BC be made its base , then if from the vertex 4 the perpendicular AD be drawn to BC ... Page 138

If the inclined side of the hill be the plane surface , the angle of the hill's inclination may be taken , and the slant

If the inclined side of the hill be the plane surface , the angle of the hill's inclination may be taken , and the slant

**height**may be measured on the surface ; and thence ( hy case 1 , of right angled trigonometry ) the horizontal line ... Page 178

Instead of the latter , are sometimes placed the centesimals of a yard , or three feet into 100 equal parts . SECTION II . MENSURATION OF

Instead of the latter , are sometimes placed the centesimals of a yard , or three feet into 100 equal parts . SECTION II . MENSURATION OF

**HEIGHTS**AND DISTANCES . Ist 178 LIST OF INSTRUMENTS .### What people are saying - Write a review

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### Common terms and phrases

acres altitude angle Answer arch base bearing called centre chains chord circle Co-sec Co-sine Co-tang column compasses contained decimal degrees Dep Lat difference direct Dist distance divided divisions draw drawn east edge equal EXAMPLE extended feet figures fixed four fourth give given glass greater ground half hand height Hence Horizon inches laid land Lat Dep latitude length less logarithm manner marked measure meridian method minutes multiplied natural object observed opposite parallel perches perpendicular plane pole PROB proportion Quadrant quotient radius reduce remainder right angles right line root rule scale Secant sect side sights sine square station Sun's suppose survey taken Tang tangent theo third triangle true whole

### Popular passages

Page 38 - The angle in a semicircle is a right angle ; the angle in a segment greater than a semicircle is less than a right angle ; and the angle in a segment less than a semicircle is greater than a right angle.

Page 25 - 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.

Page 199 - RULE. From half the sum of the three sides subtract each side severally.

Page 106 - 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 27 - The VERSED SINE of an arc is that part of the diameter which is between the sine and the arc. Thus BA is the versed sine of the arc AG.