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CBSE Class 11-science Answered

Find a vector whose length is 7m & which is perpendicular to each of the given 2 vectors: A= 2i-3i+6k cap b= i+j-k "?
Asked by | 01 Aug, 2012, 10:28: PM
Expert Answer
The vector perpendicular to A and B will be in the direction of their cross product.
the unit vector in the direction of their cross product is:
C =(-2i +8j + 5k)/sqrt(93)
Thus the required vector would be:  7C
Answered by | 01 Aug, 2012, 10:44: PM
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