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The scalar product a . b of two non-zero vectors equals?
A|a||b| cos(theta)
B|a||b| tan(theta)
C|a||b| sin(theta)
D|a||b| cot(theta)
Answer & Solution
Correct answer: A. |a||b| cos(theta)
The dot product is the product of the magnitudes and the cosine of the angle between them.
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