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 87
... meridian of the earth ; EQ the equator ; P , P ' the poles ; AB one of the tropics , and GH one of the polar circles . Then PK will represent the height of one of the frigid zones , KD the height of one of the temperate zones , and CD ...
... meridian of the earth ; EQ the equator ; P , P ' the poles ; AB one of the tropics , and GH one of the polar circles . Then PK will represent the height of one of the frigid zones , KD the height of one of the temperate zones , and CD ...
Página 92
... meridian , one end of the needle indicating the north point and the other the south . A horizontal line perpendicular to a meridian is an east and west line All the meridians passing through a survey of moderate ex- 92 TRIGONOMETRY .
... meridian , one end of the needle indicating the north point and the other the south . A horizontal line perpendicular to a meridian is an east and west line All the meridians passing through a survey of moderate ex- 92 TRIGONOMETRY .
Página 93
... meridian passing through one end ; and it is reckoned from the north or south point of the horizon , toward the east or west . Thus , if NS represent a meridian , and the angle NAB is 40 ° , then the bearing of AB from the point A is 40 ...
... meridian passing through one end ; and it is reckoned from the north or south point of the horizon , toward the east or west . Thus , if NS represent a meridian , and the angle NAB is 40 ° , then the bearing of AB from the point A is 40 ...
Página 104
... meridian passing through the end A of the line AB , and BC be perpendicular to NS , then is AC the difference of ... meridian distance of a point is the perpendicular let fall from the given point on some assumed meridian , and is east ...
... meridian passing through the end A of the line AB , and BC be perpendicular to NS , then is AC the difference of ... meridian distance of a point is the perpendicular let fall from the given point on some assumed meridian , and is east ...
Página 105
... meridian line ; in NS take any con- venient point , as A , for the first station , and lay off an angle , NAB , equal to 45 ° , the bear- ing from A to B , which will give the direction from A to B. Then , from the scale of equal parts ...
... meridian line ; in NS take any con- venient point , as A , for the first station , and lay off an angle , NAB , equal to 45 ° , the bear- ing from A to B , which will give the direction from A to B. Then , from the scale of equal parts ...
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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.