Abstract
Trigonometric functions of acute angles Solution of right triangles by means of tables of the natural functions Traverse table Solution of right triangles by inspection Problems on forces and refraction of light Logarithms, slide rule Solution of right triangles by logarithms Navigation: Dead reckoning Part I. The sailings (true course assumed) Part II. Finding the true course Compass corrections Land surveying Part I. Balancing a survey, area (true bearings assumed) Part II. Surveying instruments Finding true bearings Trigonometric functions of any angle Solution of oblique triangles Relations between functions of several angles Graphs of the trigonometric functions and their inverses, radians List and index of formulas Index, including index to definitions Answers to certain of the first five exercises of each set Tables.
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