Round to the Nearest Degree: x ≈ 44 degrees or 136 degrees. In a right-angled triangle, one angle is 30 degrees. Find the ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. In the early twentieth century, ...

From at least the nineteenth century, inventors devised special instruments for finding values of trigonometric functions. These were made for the drawing table, the battlefield, and the classroom.

THE introduction of more practical methods in the teaching of mathematics in schools has led to an increasing demand for inexpensive tables of logarithms, values of trigonometric functions, and other ...