ψ
=
arccos
(
Δ
x
Δ
x
ψ
)
=
arccos
(
0
,
5
⋅
10
−
3
2
,
4
⋅
10
−
3
)
=
1
,
36
r
a
d
(
=
78
∘
)
ψ
=
arccos
(
Δ
x
Δ
x
ψ
)
=
arccos
(
0
,
5
⋅
10
−
3
2
,
4
⋅
10
−
3
)
=
1
,
36
r
a
d
(
=
78
∘
)
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