Graduated exercises in plane trigonometry, compiled by J. and S.R. Wilson

Front Cover
 

Other editions - View all

Common terms and phrases

Popular passages

Page 37 - On the sides of an equilateral triangle three squares are described. Compare the area of the triangle formed by joining the centres of these squares with the area of the equilateral triangle.
Page 58 - I observe the angular elevation of the summits of two spires which appear in a straight line to be a, and the angular depressions of their reflexions in still water to be ß and y.
Page 11 - The apparent angular diameter of the sun is half a degree. A planet is seen to cross its disc in a straight line at a distance from its centre equal to three-fifths of its radius.

Bibliographic information