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If $A = < 8, - 5, - 3 >$ $A= <8 ,-5 ,-3 >$ and $B = < 5, 4, - 9 >$ $B= <5 ,4 ,-9 >$ , what is $A \cdot B - | | A | | | | B | |$ $A*B -||A|| ||B||$ ?

1 Answer

A. S. Adikesavan

Feb 23, 2016

47 $-$ $-$ $\sqrt{}$ $sqrt$ 11956 = $-$ $-$ 62.3435, nearly.

Explanation:

A.B is the cross product of the components = 40 $-$ $-$ 20 + 27 = 47.

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