If \[4i+j-k\] and \[3i+mj+2k\] are at right angle, then \[m=\] [Karnataka CET 2002]

If \[4i+j-k\] and \[3i+mj+2k\] are at right angle, then \[m=\] �

1.	If \[4i+j-k\] and \[3i+mj+2k\] are at right angle, then \[m=\] [Karnataka CET 2002]
A.	? 6
B.	? 8
C.	? 10
D.	? 12
Answer» D. ? 12

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If \[4i+j-k\] and \[3i+mj+2k\] are at right angle, then \[m=\] [Karnataka CET 2002]

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