A System of Geometry and Trigonometry: Together with a Treatise on Surveying : Teaching Various Ways of Taking the Survey of a Field : Also to Protract the Same and Find the Area : Likewise, Rectangular Surveying, Or, an Accurate Method of Calculating the Area of Any Field Arithmetically, Without the Necessity of Plotting it : to the Whole are Added Several Mathematical Tables, with a Particular Explanation and the Manner of Using Them : Compiled from Various AuthorsOliver D. Cooke, 1804 - 168 páginas |
Dentro del libro
Resultados 1-5 de 17
Página 13
... Hypothenuse , and the other two , Legs , or Base and Perpendicular . Note . The three Angles of every Triangle being added together will amount to 180 Degrees ; con- sequently the two Acute Angles of a Right Angled Triangle amount to 90 ...
... Hypothenuse , and the other two , Legs , or Base and Perpendicular . Note . The three Angles of every Triangle being added together will amount to 180 Degrees ; con- sequently the two Acute Angles of a Right Angled Triangle amount to 90 ...
Página 16
... Hypothenuse and Angles being given . Fig . 30 . Suppose the Hypothenuse GA 25 Rods or Chains , the Angle at C 35 ° 30 ′ and consequently the Angle at A 54 ° 30 ' . See Note after the 39th Geometrical Defi nition . Note . When Degrees ...
... Hypothenuse and Angles being given . Fig . 30 . Suppose the Hypothenuse GA 25 Rods or Chains , the Angle at C 35 ° 30 ′ and consequently the Angle at A 54 ° 30 ' . See Note after the 39th Geometrical Defi nition . Note . When Degrees ...
Página 17
... Hypothenuse and one Leg being given . Fig . 32 . Suppose the Hypothenuse AC 40 , and the Leg AB 28 . Draw the Leg AB in length 28 ; from B erect a Perpendicular an indefinite length ; take 40 in the Di- viders , and setting one foot in ...
... Hypothenuse and one Leg being given . Fig . 32 . Suppose the Hypothenuse AC 40 , and the Leg AB 28 . Draw the Leg AB in length 28 ; from B erect a Perpendicular an indefinite length ; take 40 in the Di- viders , and setting one foot in ...
Página 21
... Hypothenuse a Secant of the same An- gle . Thus , as different Sides are made Radius , the other Sides acquire different names , which are either Sines , Tangents or Secants . As the Sides and Angles of Triangles bear a certain ...
... Hypothenuse a Secant of the same An- gle . Thus , as different Sides are made Radius , the other Sides acquire different names , which are either Sines , Tangents or Secants . As the Sides and Angles of Triangles bear a certain ...
Página 22
... Hypothenuse given to find the Legs . Fig . 39 . In the Triangle ABC , given the Hypothenuse AC 25 Rods or Chains ; the Angle at A 35 ° 30 ′ , and con- sequently the Angle at C 54 ° 30 ' ; to find the Legs . Making the Hypothenuse Radius ...
... Hypothenuse given to find the Legs . Fig . 39 . In the Triangle ABC , given the Hypothenuse AC 25 Rods or Chains ; the Angle at A 35 ° 30 ′ , and con- sequently the Angle at C 54 ° 30 ' ; to find the Legs . Making the Hypothenuse Radius ...
Otras ediciones - Ver todas
System of Geometry and Trigonometry: Together with a Treatise on Surveying ... Abel Flint Sin vista previa disponible - 2017 |
System of Geometry and Trigonometry: Together With a Treatise on Surveying ... Abel Flint Sin vista previa disponible - 2017 |
Pasajes populares
Página 28 - As the base or sum of the segments Is to the sum of the other two sides, So is the difference of those sides To the difference of the segments of the base.
Página 27 - TO THEIR DIFFERENCE ; So IS THE TANGENT OF HALF THE SUM OF THE OPPOSITE ANGLES', To THE TANGENT OF HALF THEIR DIFFERENCE.
Página 6 - 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.
Página 24 - In this case the" hypothenuse may be found by the square root without finding the angles ; according to the following PROPOSITION. IN EVERY RIGHT ANGLED TRIANGLE, THE SUM OF THE SQUARES OF THE TWO LEGS IS EQUAL TO THE SQUARE OF THE HYPOTHENUSE. In the above EXAMPLE, the square of AB 78.7 is 6193.69, the square of BC 89 is 7921 ; these added make 14114,69 the square root of which is nearest 119.
Página 40 - Field work and protraction are truly taken and performed ; if not, an error must have been committed in one of them : In such cases make a second protraction ; if this agrees with the former, it is to be presumed the fault is in the Field work ; a re-survey must then be taken.
Página 33 - To find the area of a trapezoid. RULE. Multiply half the sum of the two parallel sides by the perpendicular distance between them : the product will be the area.
Página 6 - Therefore all radii of the same circle are equal. 13. The diameter of a circle is a right line drawn from one side of the circumference to the other, passing through the centre ; and it divides the circle into two equal parts, called semicircles ; as AB or DE.
Página 40 - Let his attention first be directed to the map, and inform him that the top is north, the bottom south, the right hand east, and the left hand west.
Página 23 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.