Trigonometrie, or, The manner of calculating the sides and

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Replacing sin c by sin a / sin A from the Law of Sines, sin b = tan a cot A. The introduction and development of trigonometry into an independent science in the Arab civilisation took, in all, some 400 years. It should be noted that the middle letter. in this case 0, always indicates the vertex of the angle. (2) In Fig. 2(b) the straight line AO is said to meet the straight line CB at O. Find the angles which a diagonal of the rectangle makes with the sides. 12 P and 0 are two points directly opposite to one another on the banks of a river.

Pages: 328

Publisher: EEBO Editions, ProQuest (December 29, 2010)

ISBN: 1240417624

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