7. If β is perpendicular to both a and where α kand y 2i + 3j + 4k, – InterviewSolution

1.	7. If β is perpendicular to both a and where α kand y 2i + 3j + 4k, then what is ß equal to?(a) 3i 2j (b)-3i +2j ( 21-3 (d)-21 +3
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