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For any two vectors vec a and vec b , pr...

For any two vectors `vec a` and `vec b` , prove that `| vec a xx vec b|^(2) = |vec a|^(2)|vec b|^(2) - (vec a . vecb)^(2) = [[veca.veca veca .vecb], [veca.vecb vec b.vecb]]`

Text Solution

Verified by Experts

The correct Answer is:
`[[veca.veca veca.vecb],[veca.vecb,vec b.vecb]]`
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