Find Sum of Two Vectors
Precalculus · Flashcards · Application
PRECALCULUS · FLASHCARDS
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QUESTION
Find the magnitude and direction of the sum:
10
10
10
at
0
∘
0^\circ
0
∘
plus
10
10
10
at
90
∘
90^\circ
9
0
∘
.
QUESTION
What is the magnitude of
⟨
3
,
4
⟩
\langle 3,4\rangle
⟨
3
,
4
⟩
?
QUESTION
What is the direction angle of
⟨
−
1
,
−
1
⟩
\langle -1,-1\rangle
⟨
−
1
,
−
1
⟩
in radians?
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ANSWER
5
π
4
\frac{5\pi}{4}
4
5
π
. In quadrant III, add
π
\pi
π
to reference angle
π
4
\frac{\pi}{4}
4
π
.
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