A) \[4\hat{i}+2\hat{j}+5\hat{k}\]
B) \[-4\hat{i}-2\hat{j}+5\hat{k}\]
C) \[3\hat{i}+4\hat{j}+5\hat{k}\]
D) Null vector
Correct Answer: B
Solution :
Unit vector along y axis \[=\hat{j}\] so the required vector \[=\hat{j}-[(\hat{i}-3\hat{j}+2\hat{k})+(3\hat{i}+6\hat{j}-7\hat{k})]\]\[=-\,4\hat{i}-\,2\hat{j}+5\hat{k}\]You need to login to perform this action.
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