CPM Homework Help : PC Problem 10-90

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Home > PC > Chapter 10 > Lesson 10.2.2 > Problem 10-90

10-90.

Find the angle between each pair of vectors below.

$\langle - 6,3 \rangle$ and $\langle 2,4 \rangle$
Step (a):
$-6·2+3·4$

$3 \mathbf{\text{i}} + 4 \mathbf{\text{j}}$ and $-2\mathbf{\text{j}}$
Hint (b):
These vectors are $⟨3, 4⟩$ and $⟨0, −2⟩$ .

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