| George Albert Wentworth, George Anthony Hill - Arithmetic - 1887
...AB, BO, which form the right angle, are called the legs, and the side AC is called the hypotenuse. **The sum of the two acute angles of a right triangle is** equal to one right angle, or 90°. If one of the acute angles is equal to 30°, the opposite side is... | |
| George Albert Wentworth, George Anthony Hill - Algebra - 1892 - 296 pages
...AB, BC, which form the right angle, are called the legs, and the side AG is called the hypotenuse. **The sum of the two acute angles of a right triangle is** equal to on« right angle, or 90°. If one of the acute angles is equal to 30°, the opposite side... | |
| George Albert Wentworth, George Anthony Hill - 1894
...AB, BC, which form the right angle, are called the legs, and the side AG is called the hypotenuse. **The sum of the two acute angles of a right triangle is** equal to one right angle, or 90°. If one of the acute angles is equal to 30°, the opposite side is... | |
| William Chauvenet - Geometry - 1896 - 368 pages
...angle is the quotient of the hypotenuse divided by the adjacent side. Thus sec .4 = 4» 8ec B = о а **18. The COSINE, COTANGENT, and COSECANT of an angle,...the preceding definitions, we shall have sin A = cos** В = cos A = sin В = с с tan А =« cot В = cot A = tan В = ba sec A = cosec В... | |
| George Albert Wentworth, George Anthony Hill - Mathematics - 1896 - 282 pages
...AB, BO, which form the right angle, are called the legs, and the side AC is called the hypotenuse. **The sum of the two acute angles of a right triangle is** equal to one right angle, or 90°. If one of the acute angles is equal to 30°, the opposite side is... | |
| George Albert Wentworth, George Anthony Hill - Mathematics - 1897
...AB, BC, which form the right angle, are called the legs, and the side AC is called the hypotenuse. **The sum of the two acute angles of a right triangle is** equal to ono right angle, or 90°. If one of the acute angles is equal to 30°, the opposite side is... | |
| George Washington Hull - Geometry - 1897 - 398 pages
...angles. 52. COR. 4.A triangle cannot have two right angles, nor two obtuse angles. 53. COR. 5. **The sum of the two acute angles of a right triangle is** equal to one right angle. PROPOSITION XVIII. THEOREM. 55. Two triangles are equal when two sides and... | |
| George William Myers - Arithmetic - 1908
...inches in diameter. The specific gravity of cast iron is 7.2. Find the weight of the cast iron ring 108. **The sum of the two acute angles of a right triangle is** 90°. The acute angles are to each other as 1:2. Find them. HINT: Call one angle, x, and the other... | |
| William Charles Brenke - Algebra - 1910 - 343 pages
...23. tan Л and cot Л may have any value from 0 to oo . 128. Functions of Complementary Angles. **Since the sum of the two acute angles of a right triangle is** 90°, they are complementary. By definition, we have . opp. side b sin В = -*vf = hyp. с cos... | |
| George William Myers - Arithmetic - 1912 - 402 pages
...iron is 7.2 times as heavy as an equal volume of water. Find the weight of the cast-iron ring. 86. **The sum of the two acute angles of a right triangle is** 90°. The acute angles are to each other as 1:2. Find the angles. Call one angle, x, and the other... | |
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