The naval architect's and shipbuilder's pocket-book of formulae, rules, and tables and marine engineer's and surveyor's handy book of reference (1884)
Mackrow, Clement · London, C. Lockwood and co. · leaf 19
y of an inaccessible-object on a level plane. (Fig. 14.) Let it be required to find the distancebetween A and b, a being inaccessible.Produce AB to any point D, and bisectBD in c; through D draw Dr/, making-any angle with DA, and take DC and DBrespectively and set them off on T>a asdZ> and… … Fig. 15.
