Trigonometry, as the Bohemian-born scholar Piticus named the discipline in 1595, also found a place in gunnery, in surveying, and in the physical sciences. From the seventeenth century, scales of ...

TODHUNTER's “Trigonometry” is a very familiar friend of ours, and we have now before us a bundle of letters which we received from the author in 1861 and 1862, in reply to our criticisms and ...

THIS is, in general, quite a well-written book, though, in some respects, on old lines. It covers elementary trigonometry to the logarithmic solution of triangles, and makes a good beginning by ...

Learn and revise trigonometric ratios of sine, cosine and tangent and calculate angles and lengths in right-angled triangles with GCSE Bitesize AQA Maths.

This object group only samples the devices relating to plane trigonometry in the Smithsonian collections. Separate object groups discuss spherical trigonometry, mathematical tables, sectors, slide ...

Trigonometry - Edexcel Trigonometry in 3 dimensions - Higher The three trigonometric ratios; sine, cosine and tangent are used to calculate angles and lengths in right-angled triangles.