Google Books

... double of that which measures the opposite angle ; that is, double the sine of that angle measured in the circle ; therefore the sides of the triangle are to each other as the sines of the opposite angles measured in the same circle, and consequently...

An Essay on the Theory and Practice of Setting Out Railway Curves - Page 23
by William Hill (land surveyor.) - 1847 - 24 pages
Full view - About this book

A Popular Course of Pure and Mixed Mathematics ...: With Tables of ...

Peter Nicholson - Mathematics - 1825 - 1046 pages

...angles measured in the same circle, and consequently as the sines of the same angles measured in a circle whose radius is that of the tables. Hence the...trigonometry. In any triangle the sines of the angles are proportional to the side* opposite those sane angles. 38. Therefore Io in any right-angled triangle...

Full view - About this book