k = 1
k = 2
k = 3
k = 5
k = 8
k = 13
θ ∈ [ 0 , π 2 ]
θ ∈ [ π 2 , π ]
θ ∈ [ π 2 , 3 π 2 ]
θ ∈ [ 3 π 2 , 2 π ]
θ ∈ [ 2 π , 5 π 2 ]
θ ∈ [ 5 π 2 , 3 π ]
θ ∈ [ 3 π , 7 π 2 ]
Δ 1 t = 0
Δ 2 t = − 0.22
Δ 3 t = − 0.287
Δ 5 t = − 0.338
Δ 8 t = − 0.367
Δ 13 t = − 0.385