How to find the cross product

Since cross product or vector product is a binary operation between two vectors in three-dimensional vector space, it is useful to know how to find the cross product. The cross product of two vectors leads to another vector perpendicular to the plane containing the first two vectors. In general, the cross product or vector product is symbolized by the multiplication sign, but the mathematical operation is more advanced than simple algebraic multiplication.

The cross product of vectors and is described as and creates another vector that is perpendicular to both and .

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where θ is the angle measured by to and η is the unit vector in the direction perpendicular to the plane containing both and .

Geometrically, the amount of the cross product of two vectors is equal to the area of ​​a parallelogram with and as adjacent pages. Vectors , and for a right-handed system as follows:

How to find the cross product

The cross product has the following algebraic properties.

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The following results also apply to the cross product.

How to calculate the cross product

How to find the cross product

Vectors are often specified as components within a coordinate system. In this form, it is convenient to use determinants to calculate the cross product.

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The above result applies to the Cartesian coordinates.

How to find the cross product - examples

How to find the cross product examples

Hence the cross product is not commutative.

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