 | Samuel Alsop - 1865 - 440 pages
...the extremities of that arc. Thus, EM (Fig. 32) is the chord of the arc EM. The sine of an arc is the line drawn from one extremity of the arc, perpendicular to the diameter through the other extremity. BF (Fig. 32) is the sine of AB or of EB, and BL of BD. NOTE.—The sine... | |
 | William Davis Haskoll - 1868 - 252 pages
...Now make EDG a perfectly straight line ; measure ED, and make DG equal to it. PRACTICAL TRIGONOMETRY. The sine of an arc is a right line drawn from one...extremity of the arc perpendicular to the diameter which intercepts the other extremity of the arc. AB is the sine of the angle o (fig. 45). The cosine of an... | |
 | Thomas Liddell Ainsley - 1885 - 564 pages
...DEFINITIONS. The Sine of an arc, or of the angle at the centre measured by that aro, U the straight line drawn from one extremity of the arc perpendicular to the diameter, passing through the other extremity. The Situ of the arc ABU the line B F. The Cosine of an arc is... | |
 | William Davis Haskoll - 1886 - 354 pages
...a check is obtained by measuring FG and E c, because they should be equal. PRACTICAL TRIGONOMETRY. The sine of an arc is a right line drawn from one...extremity of the arc perpendicular to the diameter which intercepts the other extremity of the arc. AB is the sine of the angle o (fig. 45). The cosine of an... | |
 | Alan Leo - 1906 - 340 pages
...the fourth part of a circle, or the arc subtending a right angle. The sine of an arc is a straight line drawn from one extremity of the arc perpendicular to the diameter passing through the other extremity of it. Therefore, the sine of 90 degrees is the greatest possible.... | |
 | Joseph Gregory Horner - 1906 - 402 pages
...BKiC Of FITCH Fig. 244. — Trigonometrical Functions. or of a semi-cirele. The sine of an arc is the line drawn from one extremity of the arc perpendicular to the diameter passing through the other extremity. Thus b l> is the sine of the arc a i>, and it in equal to half... | |
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Sine, or Right Sine, of an arc, is the line drawn from one extremity of the arc, perpendicular to the diameter which passes through the other extremity. Thus, BF is the sine of the arc AB, or of the supplemental arc BDE. 
