X is perpendicular to a=2i-j+3k and to b=i-2j+3k. If x(2i-j+k)=-6 find x
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Answer:
Step-by-step explanation:
A=2i+2j+3k
B=3i+6k+nk
A.B=(2i+2j+3k).(3i+6k+nk)=0
= 6+18+3n=0
= 24+3n=0
= 3n=-24
= n=-8
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