... có: tgγ 1 = 2,4, tgγ2 = 0 ,14 , tgα 1 = 1, 43, tgα2 = 1, 43. 1 . 1 1 1 1αγγϕtgtgtg+= = 43 ,1. 4, 21 4,2+ = 0,542.2 1 12αγϕtgtg+= = 43 ,1. 14, 01 4,2+ = 0,83 1 . 1 1 1 3αγϕtgtg+= ... 43 ,1. 4, 21 4,2+ = 0,23Cu 1 = C’.cosγ 1 = 7.cos700 = 2,39U 1 .Cu 1 = tgα 1 .7.sinγ 1 = 1, 43.7.0,94 = 9,4⇒U 1 = Cu 1 + U 1 .Cu 1 = 2,39 + 9,4 = 11 ,79=2 1 UU = 1 2dd 1, 8 ... trị : 1 . 1 1 1 1αγγϕtgtgtg+=2.2 1 12αγϕtgtg+= 1 . 1 1 1 3αγϕtgtg+=5U 1 = ω.2 1 dU2 = ω.22dTa có : Cu = C’.sinβ = C’.cosγ⇒Cu 1 = C’.cosγ 1 . Với γ 1 , γ2...