Vectors
ACT · Flashcards · Application
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QUESTION
What is the component form of
P
Q
→
\overrightarrow{PQ}
P
Q
for
P
(
−
1
,
4
)
P(-1,4)
P
(
−
1
,
4
)
and
Q
(
2
,
0
)
Q(2,0)
Q
(
2
,
0
)
?
QUESTION
Find the unit vector for
v
=
[
3
4
]
\textbf{v} = \begin{bmatrix} 3 \\ 4 \end{bmatrix}
v
=
[
3
4
]
.
QUESTION
What is the magnitude of
⟨
3
,
4
⟩
\langle 3,4\rangle
⟨
3
,
4
⟩
?
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ANSWER
5
5
5
.
3
2
+
4
2
=
25
=
5
\sqrt{3^2+4^2}=\sqrt{25}=5
3
2
+
4
2
=
25
=
5
.
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