 | Herbert Michael Wilson - Camping - 1900 - 964 pages
...numbers can be squared on the slide-rule, work can readily be checked by seeing if the square root of the sum of the squares of the two legs is equal to the hypothenuse. One of the simplest ways of avoiding mistakes is to bear in mind that sines and cosines... | |
 | Marcia Lerner, Doug McMullen - Mathematics - 2002 - 366 pages
...expression of the increase or decrease of a ratio. 135 45° Pythagorean theorem: A law that says in a right triangle, the sum of the squares of the two legs is equal to the square of the hypotenuse; also known as: a2 + b2 = c2, where c is the hypotenuse. Quadrilateral: A closed, two-dimensional,... | |
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By the Square Root. In this Case the Hypothenuse may be found by the Square Root, without finding the Angles; according to the following PROPOSITION. In every Right Angled Triangle, the Sum of the Squares of the two Legs is equal to the Square of the... 
