AB = [3, 4, 3] - [0, -2, 1] = [3, 6, 2]
AC = [5, 2, 6] - [0, -2, 1] = [5, 4, 5]
BC = [5, 2, 6] - [3, 4, 3] = [2, -2, 3]
AB·BC = [3, 6, 2]·[2, -2, 3] = 0 --> Bei B ist daher ein rechter Winkel
|AC| = |[5, 4, 5]| = √(5^2 + 4^2 + 5^2) = √66 = 8.124
|AB| = |[3, 6, 2]| = √(3^2 + 6^2 + 2^2) = 7
γ = ARCSIN(|AB| / |AC|) = ARCSIN(7 / √66) = 59.50°