Natural trigonometric functions
Subtitle: containing the natural sine, cosine, tangent and cotangent to seven decimal places for every ten seconds of arc form 0 ̊to 90 ̊semi-quadrantly arranged
By: By Robert E. Benson
Edition: 3d ed.
Publisher: Mac printing company
Published: 1941
Place of publication: Los Angeles
Language: eng
Number of pages: 180
Subjects: Trigonometry; Tables
Notes: "First edition, 1927."