To find: The angle between u and v using dot product.
Answer to Problem 19WE
The angle between u and v is
Explanation of Solution
Given:
The following
Calculation:
For any two vectors a and b, the angle between them is calculated using the formula
The dot product between u and v is calculated as follows:
The magnitude of u and v is calculated as shown below:
Substitute 5 for
Therefore, The angle between u and v is
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