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For what value of m ,the …

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For what value of m ,the vector A = 2 i^ +3 j^ - 6 k^ is perpendicular to vector B= 3 i^ - m j^ + 6 k^.
  • 1 answers

Gaurav Seth 4 years, 1 month ago

For A to be perpendicular to B, A.B should be zero

 

A.B=(2i + 3j- 6k).(3i-xj+6k)=0

 

6-3M-36=0

 

-30-3M=0

 

3M=-30

 

or M=-10

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