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In a model of a roof, one rod runs along a = 2 i + 2 j… | StemPy Lab
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In a model of a roof, one rod runs along a = 2 i + 2 j + k and another along b = 3 j + 4 k. What is the angle between the rods, to the nearest tenth of a degree?
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High School (11–12)
Vectors and Three-Dimensional Geometry › Vector Algebra
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In a model of a roof, one rod runs along
a
⃗
=
2
i
^
+
2
j
^
+
k
^
\vec a = 2\hat i + 2\hat j + \hat k
a
=
2
i
^
+
2
j
^
+
k
^
and another along
b
⃗
=
3
j
^
+
4
k
^
\vec b = 3\hat j + 4\hat k
b
=
3
j
^
+
4
k
^
. What is the angle between the rods, to the nearest tenth of a degree?
41.8
∘
41.8^\circ
41.
8
∘
48.2
∘
48.2^\circ
48.
2
∘
60.0
∘
60.0^\circ
60.
0
∘
70.5
∘
70.5^\circ
70.
5
∘
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