Question

How is the scalar product of two non zero vectors, P and Q​, with an angle θ between them, mathematically defined?

Options

• PQ sin θ

• \[\frac {P}{Q}\] cos θ

• PQ cos θ

• \[\frac {P}{Q}\] sin θ

Answer 1

PQ cos θ

Explanation:

This correctly defines the scalar product as the product of the magnitudes of the two vectors and the cosine of the angle between them.