Leather Binding on Spine and Corners with Golden leaf printing on spine. This book is printed in black & white, Sewing binding for longer life, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of binding. Reprinted in 2022 with the help of original edition published long back 1878. As this book is reprinted from a very old book, there could be some missing or flawed pages. Resized as per current standards. We expect that you will understand our compulsion with such books. If it is multi volume set, then it is only single volume. 180 Spherical trigonometry, for the use of colleges and schools, with numerous examples Todhunter, I. (Isaac) (1878)
Random person on Wikipedia says spherical trigonometry "attained an essentially complete form by the end of the nineteenth century with the publication of Todhunter's textbook Spherical trigonometry for the use of colleges and Schools. Since then, significant developments have been the application of vector methods, and the use of numerical methods."
Due to its use in navigation, spherical trig was once a common enough high school subject that New York dedicated a Regent's examination to it.