Plane trigonometry with practical applications, by Leonard E. Dickson.

INDEX
INCLUDING INDEX TO DEFINITIONS
Abscissa, 103. Deviation, 76.
Absolute error, 3. Direct angle, 100.
Acre, 82. Directed line, 2.
Addition theorem for cosine, 136. Double meridian dist., 86.
for sine, 133.
for tangent, cotangent, 138. Equator, 60.
Altitude, 115. Error, 23, 51, 52.
Angle, general, 105. of closure, 86.
in trigonometric position, 106. Extraction of roots, 37, 41.
measurement of, 99.
negative, 105. Force, 29, 131.
of depression, 5, 99. Function, 6.
of elevation, 5, 99.
of incidence, 31. Grade, 5.
of refraction, 32. Graphs, 150.
positive, 105. Gunter's chain, 82.
quadrant of, 106.
Area of field, 83, 86. Half-angle formulas, 130.
oblique triangle, 115, 128-9. Harmonic curve, 156.
right triangle, 53. Heights and distances, 9, 28, 55, 137.
Axis, 104. Hexagon, 54.
Azimuth, 100. Horizontal angle, 4, 99.
line, 4.
Balancing surveys, 84, 101. plane, 4.
Bearing, 83, 93, 94. range, 143.
reverse, 94.
Identities, 16, 110.
Casting out nines, 51. Index laws, 34.
Chain, 82. of refraction, 32.
Characteristic, 39. Interpolation, 19, 27, 63.
Co-function, 17. Inverse functions, 164.
Collimation, 99. Isosceles triangle, 53.
Compass, 61, 76.
circle, 92. Kepler's equation, 162.
course, 77. Knot, 80.
surveyor's, 91.
Complementary angle, 16. Ltitu
Component force, 30, 131. Latitude, 60, 84.
Coordinates, 103. Law o cne, 12
Cosecant, 7, 107. L oosines, 126.
curve, 155. tangents, 117.
Cosine, 7, 107. tangens, 6 1.
C ritca 1anl4. 3.Leeway, 76.
arc, 164.
curve, 9152-3. Level, 92, 98.
Finvrse, 1564. Limb of transit, 98.
law ofn, 16. Logarithm, 36.
Cangent, 7, 107. Logarithmic scales, 43.
curve,7 155. Longitude, 60, 66.
Course, 61, 77, 83.
made good, 65. Made good, 65.
Critical angle, 33. Magnetic, 94.
Cross wires, 98. Mantissa, 39.
Maps, 71, 88.
Dead reckoning, 59, 79. Mercator chart, 71.
Decagon, 54. sailing, 73.
Declination, 94. Meridian, 59.
Deflection angle, 100. distance, 86.
Departure, 62, 84. magnetic, 76.
in mid lat., 69, prime, 60.
171