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Pocket-book of mechanics and engineering (1864)
Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 126
130. Zty Sub-chords,Ctdm.v 71 == tan.i> rtan.7?b = nsec.7,o = sec.u(C — //), 7i = 77 tan. 7, w? = 2i?17=27 … 131. i Parallel tracks by a reverse curve. Formulas same as above.The length o o = 2c, length ofa circle arc / = 0-035u R.Mechanical engineering · Engineering
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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