Eamcet Mathematics - Vectors: Scalar Product of Vectors Free Online Tests | Mock Tests | Preparation | Practice Tests

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If λ is a unit vector perpendicular to plane of vector a and b and angle between them is θ, then a . b will be

A. |a| |b| sin θλ

B. |a| |b| cos θλ

C. |a| |b| cos θ

D. |a| |b| sin θ

E. None of the above

View Answer

Correct choice: C

Explanation:

|a| |b| cos θ

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