Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 311
299 LIGHTHOUSE MEMORANDA. … Now, at this distance we have within latter can be obtained from the known the limits of practice J relation between sine and cosine by assuming values for ab1 . . . ab^ . . . ab=tsai. V. rv Thus: if ab^—\ab the value of bJ32 will Whichever of the above positions be be 0.866 ab. Knowing b1(i1 . . .…
Engineering
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