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\(\text{ If }\vec{a}\text{ and }\vec{b}\text{ are two unit vectors, then }\vec{a}\cdot \vec{b}=...........\)

Q1 FREE PREVIEW

\(\text{ If }\vec{a}\text{ and }\vec{b}\text{ are two unit vectors, then }\vec{a}\cdot \vec{b}=...........\)

a

\(\cos \left(\theta \right)\)

b

\(\sin \left(\theta \right)\)

c

\(ab\cos \left(\theta \right)\)

d

\(ab\sin \left(\theta \right)\)

✓ Correct answer: a)

\(\cos \left(\theta \right)\)

Explanation

|a|=1 , |b|=1 because they are the unit vectors.

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