Functional trigonometry; a treatment of trigonometry integrated with vectors, complex numbers, and analytic geometry [by] Abraham P. Hillman [and] Gerald L. Alexanderson. Hillman, Abraham P. Alexanderson, Gerald L. joint author. Trigonometry. Functions. QA531 .H62 514 HIF Boston : Allyn and Bacon, 1961. 1961. 1961 Text 327 p. : eng