GRANVILLE'S TRIGONOMETRIES 



By WILLIAM ANTHONY GRANVILLE, President of Pennsylvania College, 

 Gettysburg, with the Editorial Cooperation of PERCEY F. 

 SMITH, Professor of Mathematics in the Shef- 

 field Scientific School, Yale University 



PLANE TRIGONOMETRY, SPHERICAL 

 TRIGONOMETRY, AND LOGARITH- 

 MIC TABLES 8vo, cloth, 264+ 38 pages, illustrated, 1.25 



Issued in parts as follows : 

 PLANE AND SPHERICAL TRIGONOMETRY WITHOUT 



TABLES 8vo, Cloth, 264 pages, illustrated, $1.00 



PLANE TRIGONOMETRY AND TABLES SYO, doth, 9 n- 3 8 



pages, $1.00 



FOUR-PLACE TABLES OF LOGARITHMS 8vo,cioth, 3 8 



pages, illustrated, 50 cents 



WHILE special attention has been given to the requirements of 

 the College-Entrance Board, this book contains all the plane 

 trigonometry that is usually taught in the undergraduate classes of 

 colleges and technical schools. 



The treatment of spherical trigonometry is unique. Nearly half 

 the work usually required in deriving the standard formulas is done 

 away with, the usual six cases in the solution of oblique spherical 

 triangles being reduced to three. The most important applications 

 of spherical trigonometry to geodesy, astronomy, and navigation are 

 treated with great clearness and simplicity. The drawings used are 

 far superior to any ever published. 



A five-inch celluloid ruler, graduated to inches and centimeters, 

 with a protractor graduated to degrees and radians, both clockwise 

 and counterclockwise, is furnished free with each copy of the book. 



137 



GINN AND COMPANY PUBLISHER$ 



