Elements of mechanics: treated by means of the differential and integral calculus (1887)
Peck, William G[uy], 1820-1892. [from old catalog] · New York, Chicago, A. S. Barnes & company · leaf 44
COMPOSITION AND RESOLUTION OF FORCES. 3D OPR, and POQ, are interiorangles on the same side, and, con-sequently, supplementary; hence,sin OPR - sin POQ. We havealso R — R. Making these sub-stitutions in the preceding propor-tion, we have, Fis u- P : Q : R : : sin QOR : sin POR : am POQ. Hence, if…
Mechanics
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