Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 140
ndow, the altitude of the tower is observed to be = 37° 30, which is 18 feetabove the lower window. Then we have A = 90 —40° = 50°. C = 90+87° W = 127° SO7. B = 180 — 50 — 127° 39 = 2° 30. I = 18 feet.What will be the height of the tower and the distance from it?The distance from the lower window… … 1 Sinus abbreviated sin.C. 2 Cosinus cos.C.8 Sinus-verms ** sinv.C. 4 Cosinus-versus ft cow. (7. 5 Tangent fcm.C. 6 Cotangent co^.Cl 7 Secant sec.C. 8 Cosecant cosec.C. r == Radius of the circle, which is the unit by which the functions are mea-sured. tan.C tan. C = cot.C = cot.C r2 =…
Mechanical engineering · Engineering
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