Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Books Books 1 - 10 of 56 on A cos B + sin A sin B, and show that, if the tangent of one angle of a triangle be....
" A cos B + sin A sin B, and show that, if the tangent of one angle of a triangle be equal to the sum of the sines of the other two, the tangents of the halves of the angles will be in geometrical progression. 2. Find an expression for the area of a plane... "
Plane trigonometry for the use of students preparing for examinations. With ... - Page 314
by A. Dawson Clarke - 1885 - 368 pages
Full view - About this book

A solemn appeal to the common sense of England, against the principles of ...

1827
...or, in other words, either of the acute angles is the complement of the other. And, conversely, if one angle of a triangle be equal to the sum of the other two, that angle is a right angle. For it is half the sum of the three angles, ie half of two...
Full view - About this book

The First Six Books of the Elements of Euclid, with a Commentary and ...

Euclid, Dionysius Lardner - Euclid's Elements - 1828 - 324 pages
...angle of a triangle be right, the sum of the other two is equal to a right angle. (126) COR. 2.If one angle of a triangle be equal to the sum of the other two angles, that angle is a right angle. (127) COR. 3.An obtuse angle of a triangle is greater...
Full view - About this book

Geometry, plane, solid, and spherical. To which is added, in an appendix ...

Pierce Morton - 1830
...right-angled triangle, the right angle is equal to the sum of the other two angles : and, conversely, if one angle of a triangle be equal to the sum of the other two, that angle shall be a right angle. " For, if the right angle be divided into parts equal...
Full view - About this book

The First Six Books of the Elements of Euclid: With a Commentary and ...

Dionysius Lardner - Geometry - 1838 - 332 pages
...angle of a triangle be right, the sum of the other two is equal to a right angle. (126) Coa. 2.If one angle of a triangle be equal to the sum of the other two angles, that angle is a right angle. (127) COR. 3.An obtuse angle of a triangle is greater...
Full view - About this book

Elements of geometry: consisting of the first four,and the sixth, books of ...

Euclides - History - 1842
...CBA, BAC, ACB are equal to two right angles. Wherefore, if a side of a triangle, &c. QED COR. A. If one angle of a triangle be equal to the sum of the two others, it is a right angle : for the adjacent exterior angle is equal to the sum of the same two...
Full view - About this book

Report of the Committee of Council on Education (England and Wales ..., Issue 2

Great Britain. Council on Education - Education - 1848
...the opposite angle. (The first case only of this proposition need be demonstrated.) Section 2. 2. If one angle of a triangle be equal to the sum of the other two, the greatest side is double of the distance of its middle point from the opposite angle....
Full view - About this book

Solutions to the questions of the general examination at Easter, 1848 ...

J. Goodall, W. Hammond - 1848
...2. 1. Similar triangles are to one another in the duplicate ratio of their homologous sides. 2. If one angle of a triangle be equal to the sum of the other two, the greatest side is double of the distance of its middle point from the opposite angle....
Full view - About this book

The school edition. Euclid's Elements of geometry, the first six books, by R ...

Euclides - 1850
...having the angle A double the angle C; shew that the side BC is less than double the side AB. 36. If one angle of a triangle be equal to the sum of the other two, the greatest side is double of the distance of its middle point from the opposite angle....
Full view - About this book

Five Years in an English University, Volume 2

Charles Astor Bristed - 1852
...number 95 be denoted by 137 ? S. Prove that and also that 9. Assuming the formula cos A = -- rr -- , find an expression for the area of a plane triangle in terms of the sides. Simplify the expression in the case of an equilateral triangle. s. Find the equation of...
Full view - About this book

The popular educator

Popular educator - 1854
...angle of a triangle be a right angle, the sum of the other two i a right angle. Corollary 5.If one angle of a triangle be equal to the sum of the other two, it is a right angle. Corollary 6.If one angle of a triangle be greater than the sum of...
Full view - About this book




  1. My library
  2. Help
  3. Advanced Book Search
  4. Download PDF