Smoley's tables; parallel tables of logarithms and squares, diagram for solving right triangles, angles and logaithmic functions, corresponding to given bevels, common logarithms of numbers, tables of logarithmic and natural trigonometric functions, and other tables; for engineers, architects and students . For Radius A E=lFG=Sina; A G=Cos a; DE=tga; BC=Cotga; A D=Sec a; A C=Cosec a; G E=Versed sin a;B H=Co versed sin a. sin^ a + cos 2 a = 1sec2 a = 1 + tang2 acosec^ a = 1 + cotg^ a Versed sin a = 1 — cos aCo versed sin a = 1 — sin a tang a =cotg a sin acos a cos asin a tang a 1 sin a a/1—cos^
Smoley's tables; parallel tables of logarithms and squares, diagram for solving right triangles, angles and logaithmic functions, corresponding to given bevels, common logarithms of numbers, tables of logarithmic and natural trigonometric functions, and other tables; for engineers, architects and students . For Radius A E=lFG=Sina; A G=Cos a; DE=tga; BC=Cotga; A D=Sec a; A C=Cosec a; G E=Versed sin a;B H=Co versed sin a. sin^ a + cos 2 a = 1sec2 a = 1 + tang2 acosec^ a = 1 + cotg^ a Versed sin a = 1 — cos aCo versed sin a = 1 — sin a tang a =cotg a sin acos a cos asin a tang a 1 sin a a/1—cos^a Vl + tg^a \/l+cotg2a 1 cotg a cos A \/l—sin^a Vl + tga \/l-{-cotg^a sin a ^t V 1—cos^acos a 1 1 tang a \/l—sin^fl C(5tg a i cotg a I . cos a 1 Vl—sin^asin a J \/l—cos 2 a tang a 170 RIGHT ANGLED a2+b2 = c2 ^==tg. A=Cotg. B;^=Cotg. A= a -=Sin. A=Cos. Bi -=^^aik c ^ . i b .-c • 7\ -=Co8. A = Sin. B; -= b OBLIQUE ANGLED TRIANGLE. Notation: A B=c; B Q= C=b; B D= D=m: D C=n.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectlogarit, bookyear1912
