Useful information for architects, engineers, and workers in wrought iron (1886)
Phoenix Iron Company · Philadelphia : Printed by J.B. Lippincott Co. · leaf 154
e) VALUE OF ANY SIDE A. B sin. a C sin. a A: Sin. b ~ Sin. c A = \/Ba + C2^2B^~cos77B A = cos. c -\- sin. r cot. a A= ^ cos. b -f- sin. £ cot. aA = B cos. c -f- B sin. <r cot. £ VALUE OF ANY ANGLE. , B sin. 0 B sin. abin. £ ssz — Sin. b = ^ A2 + c«-B» Tac Sin. b = sin. (<: -J~ Sin. ^ = sin. c… … <- Radius-- > Complement of an angle == its difference from 900.Supplement . . . . = its difference from 1800. TRIGONOMETRICAL EQUIVALENTS. v/ (i_Sin2) = Cosin. v/ (1—Cosin2) :— Sine. Sin ~ Tan — Cosin. Cosin :— Cotan = Sine. Sin X Cotan = Cosin. - Cotan = Tangent. Sine -i- Cos — Tangent. -…
Wrought-iron · Iron, Structural · Building, Iron and steel · Building
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