Essentials of trigonometry
By: [by] Irving Drooyan, Walter Hadel and Charles C. Carico.
Contributors: Hadel, Walter, joint author.; Carico, Charles C., joint author.
Publisher: Macmillan
Published: 1971
Place of publication: New York
Language: eng
Number of pages: 336
Subjects: Plane trigonometry.
Notes: "A portion of this material has been adapted from Trigonometry: an analytical approach, by Irving Drooyan and Walter Hadel."