Books Books Any angle is greater than the difference between 180° and the sum of the other two angles. First Part of an Elementary Treatise on Spherical Trigonometry - Page 30
by Benjamin Peirce - 1836 - 71 pages ## Elements of Plane and Spherical Trigonometry: With Practical Applications

Benjamin Greenleaf - Trigonometry - 1876 - 204 pages
...180°. IV. The greater side is opposite the greater angle, and conversely. .V. Any angle is greater than the difference between 180° and the sum of the other two angles. VI. A side which differs more from 90° than another side, is of the same species as its opposite angle.... ## A Treatise on Trigonometry by Profs. Oliver, Wait and Jones

Cornell University. Department of Mathematics - 1881 - 120 pages
...lies between 180° aud 540°. Each side is less than the sum of the other two. Each angle is greater than the difference between 180° and the sum of the other two. Of any two unequal sides, the greater lies opposite the greater angle ; and conversely. Each side or... ## A Treatise on Trigonometry

James Edward Oliver - Trigonometry - 1881 - 120 pages
...lies between 180° and 540°. Each side is less than the sum of the other two. Each angle is greater than the difference between 180° and the sum of the other two. Of any two unequal sides, the greater lies opposite the greater angle ; and conversely. Each side or... ## A Practical Text-book on Plane and Spherical Trigonometry

Webster Wells - Trigonometry - 1883 - 234 pages
...-с1, А'=Ш°-а, Б'=180°-Ь, С"=180°-с. (г) . Either angle of a spherical triangle is greater than the difference between 180° and the sum of the other two angles. 187. A spherical triangle is called right, bi-rectangular, or tri-rectangular, according as it has... ## The Elements of Geometry

Webster Wells - Geometry - 1886 - 392 pages
...one, two, or three obtuse angles. 671. COROLLARY II. Either angle of a spherical triangle is greater than the difference between 180° and the sum of the other two angles. For since A + B + C > 180° (§ 668) , we have A>180°-(B+C); which proves the theorem when B+C< 180°.... ## Elements of Plane and Spherical Trigonometry: With Numerous Examples

Edward Albert Bowser - Trigonometry - 1892 - 202 pages
...between 0° and 360°. The sum of the three angles lies between 180° and 540°. Each angle is greater than the difference between 180° and the sum of the other two. If two sides are equal, the angles opposite them are equal ; and conversely. If two sides are unequal,... ## A Treatise on Plane and Spherical Trigonometry: And Its Applications to ...

Edward Albert Bowser - Trigonometry - 1892 - 392 pages
...between 0° and 360°. The sum of the three angles lies between 180° and 540°. Each angle is greater than the difference between 180° and the sum of the other two. If two sides are equal, the angles opposite them are equal ; and conversely. If two sides are unequal,... ## Plane and Spherical Trigonometry

Alfred Hix Welsh - Plane trigonometry - 1894 - 228 pages
...lies between 180° and 540°. Each side is less than the sum of the other two. Each angle is greater than the difference between 180° and the sum of the other two. Of any two unequal sides, the greater lies opposite the greater angle ; and conversely. Each side or... ## A Treatise on Elementary Geometry: With Appendices Containing a Collection ...

William Chauvenet - Geometry - 1896 - 274 pages
...sides is less than 360°. IV. The sum of the angles is greater than 180°. V. Each angle is greater than the difference between 180° and the sum of the other two angles. For, by IV., A + В + C> 180° whence, A > 180° — (B + 0) But if В + C> 180°, we have, in the... 