Title: Essentials of trigonometry
First published: 1983
Subjects: Textbooks, Trigonometry, Trigonometrie, Differential equations, Randwaardeproblemen, Boundary value problems, Differentiaalvergelijkingen, Mathematics, Geometry, Algebra, Science/Mathematics, Elementary geometry & trigonometry, Mathematics / Trigonometry, Testbooks, Graphic methods, Analytic Geometry, Precalculus