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What is the angle between two vectors -2i+3j+k and i+2j-4k?

Asked by 28th February 2013, 5:27 PM
Answered by Expert
Answer:
A=-2i+3j+k
B=i+2j-4k
A.B=(-2i+3j+k).(i+2j-4k)
     =0
AB cos?=0
?=90
Answered by Expert 28th February 2013, 5:50 PM
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