Introduction to Plane Trigonometry is a comprehensive guide to the principles of trigonometry, written by Thomas Grenfell Vyvyan and first published in 1882. The book covers the basics of trigonometry, including the definitions of angles, the trigonometric functions, and the use of trigonometry in solving problems related to triangles. It also includes more advanced topics such as the use of logarithms in trigonometry and the solution of trigonometric...