Astronomers prepared tables of trigonometric functions (especially for triangles on a sphere) from ancient times. With the introduction of the printing press, and the rapid decrease in the cost of ...

Interpolated Six-Place Tables of the Logarithms of Numbers and the Natural and Logarithmic Trigonometric Functions. Edited by H. W. Marsh. Pp. xii + 155. (New York: John Wiley and Sons ...

There are three main trigonometric functions - Sine θ (sin θ), Cosine ... to Base Tips and Tricks to Learn Trigonometric Formulas, Table and Signs Easily There are few easy ways to learn the ...

They also gained a place on calculating instruments called slide rules. Those carrying out more precise calculations consulted printed tables of trigonometric functions. By the twentieth century, ...

Table of Logarithms and Anti-logarithms (Four Figures), 1 to 10,000. Arranged by Major-Gen. J. C. Hannyngton. Pp. iv + 41. (London: C. and E. Layton, n.d.). Price 1s ...

When applied to an angle measure, the three trigonometric functions produce the various combinations of ratios of side lengths. In other words: The tangent of angle A = the length of the opposite ...