Natural trigonometric functions
Subtitle: containing the natural sine, cosine, tangent and cotangent to seven decimal places for every ten seconds of arc from 0 to 90 semi-quadrantly arranged
By: Robert E. Benson.
Publisher: C. T. Powner Co.
Published: 1947
Place of publication: Chicago, Illinois
Number of pages: 180
Subjects: Trigonometry -- Tables
Genres: Tables