Books Books Then, add together the logarithms of the two sides and the logarithmic sine of their included angle; from this sum subtract the logarithm of the radius, which is 10, and the remainder will be the logo.ritiim of double the area of the triangle. Elements of Surveying: Including a Description of the Instruments and the ... - Page 81
by Charles Davies - 1837 - 249 pages ## Elements of Geometry and Trigonometry: From the Works of A.M. Legendre

Adrien Marie Legendre - Geometry - 1874 - 512 pages
...c + log sin B — 10 ; hence, we may write the following EULE. Add together the logarithms of tlte two sides and the logarithmic sine of their included angle / from this sum tubtract 10 ; tlie remainder will be the logarithm of double tAe area of the triangle, find, from the... ## Key to Baillairgé'stereometrical Tableau: New System of Measuring All Bodies ...

Charles P. Florent Baillairgé - Measurement - 1876 - 306 pages
...'remaining the same, to determine the area for an enclosed angle=45° 1 Ans. 588.6664. (12) By Logarithms. Add together the logarithms of the two sides and the logarithmic sine of their enclosed angle ; from this sum take 10, log. of the radins, and the remainder will be the log. of double... ## Elements of Geometry and Trigonometry from the Works of A.M. Legendre ...

Charles Davies, Adrien Marie Legendre - Geometry - 1885 - 538 pages
...5— (Trig., Art. 30), and applying logarithms, we have hence, we may write the following RULE. — Add together the logarithms of the two sides and the...sine of their included angle; from thi-s sum subtract 1 0 ; the remainder will be the logarithm of double the area of the triangle. Find, from the table,... ## Rider's Little Engineer: A Pocket-book of Engineering and Other Data ...

Joseph Benjamin Rider - Engineering - 1901 - 556 pages
...=. area of Д required. Area, when two sides and included angle are given, see figure 21. RULE. — Add together the logarithms of the two sides and the...sine of their included angle ; from this sum subtract ю ; the remainder will be the logarithm of double the area of the triangle. Find, from the table,... 