Essentials of trigonometry /
Drooyan, Irving.
Essentials of trigonometry / Irving Drooyan, Walter Hadel, Charles C. Carico. - 4th ed. - New York : Macmillan, 1986. - xi, 367 p. : ill. (some col.) ; 25 cm.
Includes index.
0023305703
Plane trigonometry.
Essentials of trigonometry / Irving Drooyan, Walter Hadel, Charles C. Carico. - 4th ed. - New York : Macmillan, 1986. - xi, 367 p. : ill. (some col.) ; 25 cm.
Includes index.
0023305703
Plane trigonometry.