International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 245
and at a givendistance H G from D H. Todetermine the point E (thenew P. C. C.) the angle ELFmust be determined, and sub-stituted for the known angleB K D. From (T, the centerof the larger curve, let fallupon F G the perpendicularCG. From A^and L let fall upon C6the perpendiculars KMand L N. Call… … MN Fig. 362. cos y = (99.) R-r That is, f/ie distance L F or H G measured rectangularlybetzvecn the tzvo tangents, being added to the difference of theradii times cos x, and the result divided by the difference ofthe radii, will give the cosine of the angle ELF, or y, to beturned on the smaller…
Railroad engineering
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