Essentials of trigonometry : with applications /
Curtiss, David Raymond,1878-
Moulton, Elton James,1887-
Oglesby, Earnest Jackson.
Boston : D.C. Heath and Co.
c1942.
"The first five chapters are taken from the authors' text, A brief course in trigonometry, with minor revision. In the next three chapters part of the material has been adapted from the same text and from the authors' Trigonometry, plane and spherical. Most of the last chapter is new."--Pref.
With this is bound: Oglesby, Earnest Jackson. Heath's logarithmic and trigonometric tables. Rev. ed. Boston : D.C. Heath and Co., c1942.
Trigonometry.