Progressive Lessons in Applied Science, Vol. 3: Trigonometry, Vision, Surveying Instruments (Classic Reprint) - Tapa blanda

Sinopsis

Excerpt from Progressive Lessons in Applied Science, Vol. 3: Trigonometry, Vision, Surveying Instruments

If, as is usual and convenient, we take the radius of the circle as unit, the semicircumference is 3 141 5926, and therefore the length of an arc of one ancient degree is the 180th part of this or °017 4533, and that of one minute '000 2909. Or if we use the modern division of the circumference into 400 grades, one grade is 015 7080 and one minute (the hundredth part of a grade) is °000 1571. Thus it is an easy matter to make a table of the lengths of circular arcs.

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