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What is Scalar Product?

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Scalar product is the product of magnitude of two vectors and cosine of angle θ  between them

P × Q = PQ cosƟ

Scalar Product

If P = Pxî + Pyĵ + Pzk̂ and Q = Qxî + Qyĵ + Qz

Then P ×Q = PxQz + PyQy + PzQz …….. dot product

scalar product

From the above equation we know that Power is a Scalar Quantity as it is a scalar product of two Vector Quantities.

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