A complete and practical solution book for the common school teacher (1899)
Fairchild, J[ohn] T[heodore] [from old catalog] · Crawfis College, Ohio, The author · leaf 163
the waters edge;at the same time a bird flies up and then down to the squirrel at thewaters edge, and the bird flew as far as the squirrel ran: find theheight that the bird flew. Solution. (1) Let E represent the point the bird is sit-uated when it fliesupward and thesquirrel runs down-ward. (2)… … MENSURA TION. 149 1002 =j/2 . . . (1). (5) x+y = 160 . . . (2). (6) Find the value oi y in (2), square, and substitute its value in (1), and solve for x. (7) Hence, x = 27/T ft. .-, 27y\ ft. = height that the bird flew. PROBLEM 322. Two poles, perpendicular to the same plane, are 30 ft. and 50 ft.…
Arithmetic · Geometry
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