## Dot Product Or Scalar Product

It is defined as the product of the magnitudes of vector A and B and the cosine of the angle θ between them.

It is represented by

## Dot Product Of Two Vectors

Let a = a₁ i^ + a₂ j^ + a₃ k^ and b = b₁ i^ + b₂ j^ + b₃ k^, then

## Vector Product Or Cross Product

It is defined as the product of the magnitude of vector A and B and the sine of the angle θ between them.

It is represented as-

A×B = AB Sinθ

## Cross Product Of Two Vectors

Let a = a₁ i^ + a₂ j^ + a₃ k^ and b = b₁ i^ + b₂ j^ + b₃ k^, then

**Case-I:** Cross product of two parallel or anti parallel vectors is zero.

**Case-II: **Cross product of two mutually perpendicular vector is equal to product of the magnitude of two vectors.

**NCERT Class 11 Physics Book PDF Free Download**

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##### NCERT Class 11 Physics Hand Written Notes Chapter-Wise

**Chapter-1(Physical World) PDF Free Download**

**Chapter-2(Units and Measurement) PDF Free Download**

**Chapter-3(Motion In A Straight Line) PDF Free Download**

**Chapter-4(Motion In A Plane) PDF Free Download**