Math, asked by amuo8625, 1 year ago

A=2i+3j-k and b=i+2j-4k and c=i+j+k find (a × b).(a × c

Answers

Answered by someshwarpatil02

6

Answer:

-62

Step-by-step explanation:

a×b=-10i+7j+k

b×c=-4i-3j-k

hence

(a×b).(a×c)=-40-21-1=62

Answered by likhitadasari

7

Answer:

-62

Step-by-step explanation:

Check it out...

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