Plane trigonometry, and its application to mensuration and land surveying. Accompanied with all the necessary logarithmic and trigonometric tables (1852)
Perkins, George R. (George Roberts), 1812-1876 · New York, D. Appleton · leaf 76
u u area ABCDEF = 150-3115 §54.] MENSUKATION. 65 … PROBLEM VI. To find the area of a quadrilateral in terms of its diagonalsand their included angle. Let ABCD be the quadrilat-eral figure, of which the diago-nals AC, BD, and their angleK of intersection are given. Through A, B, C, D, drawlines parallel to the diagonals,which will together form the…
Plane trigonometry · Surveying
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