Bøker  Bok 11–12 av 12 på In every plane triangle, it will be, as the sum of any two sides is to their difference... 
In every plane triangle, it will be, as the sum of any two sides is to their difference... Trigonometry, Plane and Spherical: With the Construction and Application of ...  Side 6 av Thomas Simpson  1748  77 sider Uten tilgangsbegrensning 
