Tables of Logarithms of Numbers and of Sines and Tangents for Every Ten Seconds of the Quadrant: With Other Useful TablesHarper & brothers, 1859 - 150 páginas |
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Página 48
... position , B the other a vertical . The angle ACD is called the first quadrant , the angle DCB the second quadrant , the angle BCE the third quadrant , and the an- C E H gle ECA the fourth quadrant ; that is , the first quadrant is ...
... position , B the other a vertical . The angle ACD is called the first quadrant , the angle DCB the second quadrant , the angle BCE the third quadrant , and the an- C E H gle ECA the fourth quadrant ; that is , the first quadrant is ...
Página 91
... position . For this purpose , in ascending a hill , the hind end of the chain should be raised from the ground until it is on a level with the fore end , and should be held vertically over the termination of the preceding chain . In ...
... position . For this purpose , in ascending a hill , the hind end of the chain should be raised from the ground until it is on a level with the fore end , and should be held vertically over the termination of the preceding chain . In ...
Página 92
... position . ( 137. ) When the magnetic needle is supported so as to turn freely , and is allowed to come to a state of rest , the direction it assumes is called the magnetic meridian , one end of the needle indicating the north point and ...
... position . ( 137. ) When the magnetic needle is supported so as to turn freely , and is allowed to come to a state of rest , the direction it assumes is called the magnetic meridian , one end of the needle indicating the north point and ...
Página 93
... position . 800 700 600 50 ° 400 30 ° D To measure the angle of elevation , for example , of the top of a tower , point the telescope , CD , toward the tower , keeping the radius , CB , in a vertical position by means of the plumb line ...
... position . 800 700 600 50 ° 400 30 ° D To measure the angle of elevation , for example , of the top of a tower , point the telescope , CD , toward the tower , keeping the radius , CB , in a vertical position by means of the plumb line ...
Página 95
... position of the vernier , we pass along the vernier until a line is found coin- ciding with a line of the limb . The number of this line from the zero point indicates the minutes which are to be added to the degrees and half degrees ...
... position of the vernier , we pass along the vernier until a line is found coin- ciding with a line of the limb . The number of this line from the zero point indicates the minutes which are to be added to the degrees and half degrees ...
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Términos y frases comunes
9 I I altitude angle of elevation arithm base chains circle Co-sine Co-tangent complement computed correction cosecant course and distance decimal diameter diff difference of latitude difference of longitude Dist divided equal equator fifth figure find the angles find the area find the Logarithm frustum given number given the angle height Hence horizontal plane hypothenuse inches latitude and departure length LO LO LO logarithmic sine measured meridian middle latitude miles minutes Multiply natural number nautical miles parallel parallel sailing perpendicular places plane sailing Prob Prop proportional quadrant radius Required the logarithmic right-angled spherical triangle right-angled triangle Sandy Hook secant ship sails side AC spherical triangle ABC SPHERICAL TRIGONOMETRY station subtract surface tabular number tang Tangent telescope theodolite Theorem vernier vertical Vulgar Fraction wyll yards zoids ΙΙ ΙΟ
Pasajes populares
Página 20 - The circumference of every circle is supposed to be divided into 360 equal parts, • called degrees, each degree into 60 minutes, and each minute into 60 seconds, etc.
Página 163 - In any spherical triangle, the sines of the sides are proportional to the sines of the opposite angles. In the case of right-angled spherical triangles, this proposition has already been demonstrated.
Página 69 - FIND the area of the sector having the same arc with the segment, by the last problem. Find also the area of the triangle, formed by the chord of the segment and the two radii of the sector.
Página 54 - 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 69 - TO THE NUMBER OF DEGREES IN THE ARC ; So IS THE AREA OF THE CIRCLE, TO THE AREA OF THE SECTOR.
Página 73 - To find the solidity of a pyramid. RULE. Multiply the area of the base by one third of the altitude.
Página vi - The characteristic of the logarithm of ANY NUMBER GREATER THAN UNITY, is one less than the number of integral figures in the given number.
Página 184 - If a heavy sphere, whose diameter is 4 inches, be let fall into a conical glass, full of water, whose diameter is 5, and altitude 6 inches ; it is required to determine how much water will run over ? AHS.