Description and Use of a Diagram of Navigation: By which All Problems in Plane, Traverse, Parallel, Middle Latitude and Mercator's Sailing May be Instantly and Accurately Resolved. Adapted to the Capacity of All who Know the Use of Figures. Designed as an Easy Introduction, by Sensible Demonstration, to the Principles, and the Practice of Navigation. With a Diagram EngravedFellowes & Simpson, 1822 - 4 σελίδες |
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Σελίδα 11
... DEGREES , the third LATITUDE , and the fourth EXPANDED DEGREES OF LATITUDE . Their several uses will be hereinafter ... acute angle opposite , or contiguous to the side given . 19. It is therefore very conveniently applicable to the ...
... DEGREES , the third LATITUDE , and the fourth EXPANDED DEGREES OF LATITUDE . Their several uses will be hereinafter ... acute angle opposite , or contiguous to the side given . 19. It is therefore very conveniently applicable to the ...
Σελίδα 43
... angle is the secant of the complement of that arc or angle . 177. A ... acute . 187. As great use is made of the chords , sines , tan- gents and ... angle of 90 deg . If a line be drawn within this arc from one end of it to the other ...
... angle is the secant of the complement of that arc or angle . 177. A ... acute . 187. As great use is made of the chords , sines , tan- gents and ... angle of 90 deg . If a line be drawn within this arc from one end of it to the other ...
Σελίδα 46
... acute angles be given , all the angles are given - for the given acute angle being subtracted from 90 deg . the remainder will be the other acute angle ; and the third angle is a right angle , or 90 deg . 208. Either side of a right ...
... acute angles be given , all the angles are given - for the given acute angle being subtracted from 90 deg . the remainder will be the other acute angle ; and the third angle is a right angle , or 90 deg . 208. Either side of a right ...
Σελίδα 47
... angle 32 deg . it is seen that the other leg 115 is the tangent of its opposite angle 32 deg . and that the hyp 217 ... acute angle 64 deg . the leg 78 as radius will give the other leg 160 as tangent- being opposite the angle 64 deg ...
... angle 32 deg . it is seen that the other leg 115 is the tangent of its opposite angle 32 deg . and that the hyp 217 ... acute angle 64 deg . the leg 78 as radius will give the other leg 160 as tangent- being opposite the angle 64 deg ...
Σελίδα 48
... angle ; and the other acute angle is 69 deg . Problems which may be performed by the Diagram of Navigation . 216. Given the perimeter , or the sum of the four sides of a square , to find the diagonal . Rule . Set the index on 45 deg ...
... angle ; and the other acute angle is 69 deg . Problems which may be performed by the Diagram of Navigation . 216. Given the perimeter , or the sum of the four sides of a square , to find the diagonal . Rule . Set the index on 45 deg ...
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arc of latitude arc or angle chord circle circumference co-sine co-tangent contiguous angle course 3 points course 3 pts course 38 deg COURSE and DEPARTURE Course and Diff course and distance course sailed curve line departure 84 Diagram of Navigation difference of lati difference of latitude difference of longitude direct course dist DISTANCE and DEPARTURE distance sailed ence of longitude Example Example.-A ship sails find the COURSE find the DISTANCE give the course give the diff give the distance Given both LATITUDES Given-one LATITUDE index remaining index set index to meet meet the difference Mercator's sailing merid meridian distance meridional difference middle lat parallel sailing plane sailing proper diff radius be equal required the course right line drawn right-angled plane triangle Rule Rule.-Set the index secant Set the index ship in lat side as radius side marked equator tance tangent traverse table tude