A) \[5\hat{i}+20\hat{j}\]
B) \[15\hat{i}+10\hat{j}\]
C) \[20\hat{i}+15\hat{j}\]
D) \[15\hat{i}+20\hat{j}\]
Correct Answer: D
Solution :
\[|B|\,=\sqrt{{{7}^{2}}+{{(24)}^{2}}}\] \[=\sqrt{625}\] \[=25\] Unit vector in the direction of A will be \[\hat{A}=\frac{3\hat{i}+4\hat{j}}{5}\] So required vector =\[25\left( \frac{3\hat{i}+4\hat{j}}{5} \right)\,\] \[=15\hat{i}+20\hat{j}\]
You need to login to perform this action.
You will be redirected in
3 sec
