Question

what do you understand by the scalar product of two vectors? write the formula,explaining the symbols used. hu​

Answer 1

Answer:

The scalar product and the vector product are the two ways of multiplying vectors which see the most application in physics and astronomy. The scalar product of two vectors can be constructed by taking the component of one vector in the direction of the other and multiplying it times the magnitude of the other vector.

The scalar product of a and b is: a · b = |a||b| cosθ We can remember this formula as: “The modulus of the first vector, multiplied by the modulus of the second vector, multiplied by the cosine of the angle between them.” Clearly b · a = |b||a| cosθ and so a · b = b · a.

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